Home / 961,308,049.60-1,441,962,074.40-638,191,921.60

Finding the Fourth Proportional to 961,308,049.60, 1,441,962,074.40 and 638,191,921.60

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Solution

The fourth proportional to 961,308,049.60, 1,441,962,074.40 and 638,191,921.60 is: 957,287,882.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    961,308,049.60 : 1,441,962,074.40 = 638,191,921.60 : x
  2. Step 2: Convert to fraction form
    961,308,049.60/1,441,962,074.40 = 638,191,921.60/x
  3. Step 3: Cross multiply
    961,308,049.60x = 1,441,962,074.40 × 638,191,921.60
  4. Step 4: Simplify right side
    961,308,049.60x = 920,248,547,135,658,240
  5. Step 5: Solve for x
    x = 920,248,547,135,658,240/961,308,049.60
  6. Step 6: Final answer
    x = 957,287,882.40

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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.