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Finding the Fourth Proportional to 488,565.20, 732,847.80 and 320,603.60

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Solution

The fourth proportional to 488,565.20, 732,847.80 and 320,603.60 is: 480,905.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,565.20 : 732,847.80 = 320,603.60 : x
  2. Step 2: Convert to fraction form
    488,565.20/732,847.80 = 320,603.60/x
  3. Step 3: Cross multiply
    488,565.20x = 732,847.80 × 320,603.60
  4. Step 4: Simplify right side
    488,565.20x = 234,953,642,932.08
  5. Step 5: Solve for x
    x = 234,953,642,932.08/488,565.20
  6. Step 6: Final answer
    x = 480,905.40

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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.