Home / 1,489,228,559.96-2,055,110,341.32-820,235,905.16

Finding the Fourth Proportional to 1,489,228,559.96, 2,055,110,341.32 and 820,235,905.16

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Solution

The fourth proportional to 1,489,228,559.96, 2,055,110,341.32 and 820,235,905.16 is: 1,131,911,740.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489,228,559.96 : 2,055,110,341.32 = 820,235,905.16 : x
  2. Step 2: Convert to fraction form
    1,489,228,559.96/2,055,110,341.32 = 820,235,905.16/x
  3. Step 3: Cross multiply
    1,489,228,559.96x = 2,055,110,341.32 × 820,235,905.16
  4. Step 4: Simplify right side
    1,489,228,559.96x = 1,685,675,291,006,011,136
  5. Step 5: Solve for x
    x = 1,685,675,291,006,011,136/1,489,228,559.96
  6. Step 6: Final answer
    x = 1,131,911,740.30

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.