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Finding the Fourth Proportional to 488,859.40, 732,705.90 and 438,704.20

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Solution

The fourth proportional to 488,859.40, 732,705.90 and 438,704.20 is: 657,532.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,859.40 : 732,705.90 = 438,704.20 : x
  2. Step 2: Convert to fraction form
    488,859.40/732,705.90 = 438,704.20/x
  3. Step 3: Cross multiply
    488,859.40x = 732,705.90 × 438,704.20
  4. Step 4: Simplify right side
    488,859.40x = 321,441,155,694.78
  5. Step 5: Solve for x
    x = 321,441,155,694.78/488,859.40
  6. Step 6: Final answer
    x = 657,532.93

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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.