Home / 2,019,121,430.90-3,028,965,581.55-638,792,006.90

Finding the Fourth Proportional to 2,019,121,430.90, 3,028,965,581.55 and 638,792,006.90

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Solution

The fourth proportional to 2,019,121,430.90, 3,028,965,581.55 and 638,792,006.90 is: 958,277,681.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,019,121,430.90 : 3,028,965,581.55 = 638,792,006.90 : x
  2. Step 2: Convert to fraction form
    2,019,121,430.90/3,028,965,581.55 = 638,792,006.90/x
  3. Step 3: Cross multiply
    2,019,121,430.90x = 3,028,965,581.55 × 638,792,006.90
  4. Step 4: Simplify right side
    2,019,121,430.90x = 1,934,879,002,669,350,144
  5. Step 5: Solve for x
    x = 1,934,879,002,669,350,144/2,019,121,430.90
  6. Step 6: Final answer
    x = 958,277,681.10

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.