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Finding the Fourth Proportional to 521,531.70, 781,714.35 and 296,999.70

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Solution

The fourth proportional to 521,531.70, 781,714.35 and 296,999.70 is: 445,167.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,531.70 : 781,714.35 = 296,999.70 : x
  2. Step 2: Convert to fraction form
    521,531.70/781,714.35 = 296,999.70/x
  3. Step 3: Cross multiply
    521,531.70x = 781,714.35 × 296,999.70
  4. Step 4: Simplify right side
    521,531.70x = 232,168,927,435.70
  5. Step 5: Solve for x
    x = 232,168,927,435.70/521,531.70
  6. Step 6: Final answer
    x = 445,167.43

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1.5x scale

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.