Home / 438,859,520.89-658,188,547.02-261,646,805.81

Finding the Fourth Proportional to 438,859,520.89, 658,188,547.02 and 261,646,805.81

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Solution

The fourth proportional to 438,859,520.89, 658,188,547.02 and 261,646,805.81 is: 392,410,151.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,859,520.89 : 658,188,547.02 = 261,646,805.81 : x
  2. Step 2: Convert to fraction form
    438,859,520.89/658,188,547.02 = 261,646,805.81/x
  3. Step 3: Cross multiply
    438,859,520.89x = 658,188,547.02 × 261,646,805.81
  4. Step 4: Simplify right side
    438,859,520.89x = 172,212,930,948,508,000
  5. Step 5: Solve for x
    x = 172,212,930,948,508,000/438,859,520.89
  6. Step 6: Final answer
    x = 392,410,151.20

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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.