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Finding the Fourth Proportional to 532,812.66, 798,530.07 and 398,640.21

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Solution

The fourth proportional to 532,812.66, 798,530.07 and 398,640.21 is: 597,444.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,812.66 : 798,530.07 = 398,640.21 : x
  2. Step 2: Convert to fraction form
    532,812.66/798,530.07 = 398,640.21/x
  3. Step 3: Cross multiply
    532,812.66x = 798,530.07 × 398,640.21
  4. Step 4: Simplify right side
    532,812.66x = 318,326,194,796.12
  5. Step 5: Solve for x
    x = 318,326,194,796.12/532,812.66
  6. Step 6: Final answer
    x = 597,444.88

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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.