Home / 638,613,505.40-957,920,258.10-207,792,001.40

Finding the Fourth Proportional to 638,613,505.40, 957,920,258.10 and 207,792,001.40

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Solution

The fourth proportional to 638,613,505.40, 957,920,258.10 and 207,792,001.40 is: 311,688,002.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,613,505.40 : 957,920,258.10 = 207,792,001.40 : x
  2. Step 2: Convert to fraction form
    638,613,505.40/957,920,258.10 = 207,792,001.40/x
  3. Step 3: Cross multiply
    638,613,505.40x = 957,920,258.10 × 207,792,001.40
  4. Step 4: Simplify right side
    638,613,505.40x = 199,048,167,612,203,584
  5. Step 5: Solve for x
    x = 199,048,167,612,203,584/638,613,505.40
  6. Step 6: Final answer
    x = 311,688,002.10

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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.