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Finding the Fourth Proportional to 488,443.60, 732,665.40 and 368,693.20

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Solution

The fourth proportional to 488,443.60, 732,665.40 and 368,693.20 is: 553,039.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,443.60 : 732,665.40 = 368,693.20 : x
  2. Step 2: Convert to fraction form
    488,443.60/732,665.40 = 368,693.20/x
  3. Step 3: Cross multiply
    488,443.60x = 732,665.40 × 368,693.20
  4. Step 4: Simplify right side
    488,443.60x = 270,128,750,855.28
  5. Step 5: Solve for x
    x = 270,128,750,855.28/488,443.60
  6. Step 6: Final answer
    x = 553,039.80

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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.