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Finding the Fourth Proportional to 508,959.98, 702,637.44 and 392,418.90

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Solution

The fourth proportional to 508,959.98, 702,637.44 and 392,418.90 is: 541,748.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,959.98 : 702,637.44 = 392,418.90 : x
  2. Step 2: Convert to fraction form
    508,959.98/702,637.44 = 392,418.90/x
  3. Step 3: Cross multiply
    508,959.98x = 702,637.44 × 392,418.90
  4. Step 4: Simplify right side
    508,959.98x = 275,728,211,303.62
  5. Step 5: Solve for x
    x = 275,728,211,303.62/508,959.98
  6. Step 6: Final answer
    x = 541,748.31

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1.5x scale

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.