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Finding the Fourth Proportional to 865,875.60, 1,298,813.40 and 706,443.30

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Solution

The fourth proportional to 865,875.60, 1,298,813.40 and 706,443.30 is: 1,059,664.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,875.60 : 1,298,813.40 = 706,443.30 : x
  2. Step 2: Convert to fraction form
    865,875.60/1,298,813.40 = 706,443.30/x
  3. Step 3: Cross multiply
    865,875.60x = 1,298,813.40 × 706,443.30
  4. Step 4: Simplify right side
    865,875.60x = 917,538,024,380.22
  5. Step 5: Solve for x
    x = 917,538,024,380.22/865,875.60
  6. Step 6: Final answer
    x = 1,059,664.95

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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.