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Finding the Fourth Proportional to 487,900.80, 730,425.60 and 347,932.80

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Solution

The fourth proportional to 487,900.80, 730,425.60 and 347,932.80 is: 520,882.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,900.80 : 730,425.60 = 347,932.80 : x
  2. Step 2: Convert to fraction form
    487,900.80/730,425.60 = 347,932.80/x
  3. Step 3: Cross multiply
    487,900.80x = 730,425.60 × 347,932.80
  4. Step 4: Simplify right side
    487,900.80x = 254,139,024,199.68
  5. Step 5: Solve for x
    x = 254,139,024,199.68/487,900.80
  6. Step 6: Final answer
    x = 520,882.57

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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.