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Finding the Fourth Proportional to 488,659.60, 732,989.40 and 404,678.80

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Solution

The fourth proportional to 488,659.60, 732,989.40 and 404,678.80 is: 607,018.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,659.60 : 732,989.40 = 404,678.80 : x
  2. Step 2: Convert to fraction form
    488,659.60/732,989.40 = 404,678.80/x
  3. Step 3: Cross multiply
    488,659.60x = 732,989.40 × 404,678.80
  4. Step 4: Simplify right side
    488,659.60x = 296,625,270,804.72
  5. Step 5: Solve for x
    x = 296,625,270,804.72/488,659.60
  6. Step 6: Final answer
    x = 607,018.20

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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.