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Finding the Fourth Proportional to 865,699.60, 1,298,549.40 and 706,267.30

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Solution

The fourth proportional to 865,699.60, 1,298,549.40 and 706,267.30 is: 1,059,400.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,699.60 : 1,298,549.40 = 706,267.30 : x
  2. Step 2: Convert to fraction form
    865,699.60/1,298,549.40 = 706,267.30/x
  3. Step 3: Cross multiply
    865,699.60x = 1,298,549.40 × 706,267.30
  4. Step 4: Simplify right side
    865,699.60x = 917,122,978,654.62
  5. Step 5: Solve for x
    x = 917,122,978,654.62/865,699.60
  6. Step 6: Final answer
    x = 1,059,400.95

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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.