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Finding the Fourth Proportional to 614,332.80, 921,499.20 and 348,612.30

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Solution

The fourth proportional to 614,332.80, 921,499.20 and 348,612.30 is: 522,918.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,332.80 : 921,499.20 = 348,612.30 : x
  2. Step 2: Convert to fraction form
    614,332.80/921,499.20 = 348,612.30/x
  3. Step 3: Cross multiply
    614,332.80x = 921,499.20 × 348,612.30
  4. Step 4: Simplify right side
    614,332.80x = 321,245,955,560.16
  5. Step 5: Solve for x
    x = 321,245,955,560.16/614,332.80
  6. Step 6: Final answer
    x = 522,918.45

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Similar ratio
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1.5x scale

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.