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Finding the Fourth Proportional to 508,958.98, 702,636.06 and 392,417.90

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Solution

The fourth proportional to 508,958.98, 702,636.06 and 392,417.90 is: 541,746.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,958.98 : 702,636.06 = 392,417.90 : x
  2. Step 2: Convert to fraction form
    508,958.98/702,636.06 = 392,417.90/x
  3. Step 3: Cross multiply
    508,958.98x = 702,636.06 × 392,417.90
  4. Step 4: Simplify right side
    508,958.98x = 275,726,967,129.47
  5. Step 5: Solve for x
    x = 275,726,967,129.47/508,958.98
  6. Step 6: Final answer
    x = 541,746.93

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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.