Home / 420,932,637.72-631,403,938.83-254,972,332.71

Finding the Fourth Proportional to 420,932,637.72, 631,403,938.83 and 254,972,332.71

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Solution

The fourth proportional to 420,932,637.72, 631,403,938.83 and 254,972,332.71 is: 382,461,516.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,932,637.72 : 631,403,938.83 = 254,972,332.71 : x
  2. Step 2: Convert to fraction form
    420,932,637.72/631,403,938.83 = 254,972,332.71/x
  3. Step 3: Cross multiply
    420,932,637.72x = 631,403,938.83 × 254,972,332.71
  4. Step 4: Simplify right side
    420,932,637.72x = 160,990,535,165,767,264
  5. Step 5: Solve for x
    x = 160,990,535,165,767,264/420,932,637.72
  6. Step 6: Final answer
    x = 382,461,516.97

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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.