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Finding the Fourth Proportional to 721,856.52, 996,020.82 and 453,429

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Solution

The fourth proportional to 721,856.52, 996,020.82 and 453,429 is: 625,643.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,856.52 : 996,020.82 = 453,429 : x
  2. Step 2: Convert to fraction form
    721,856.52/996,020.82 = 453,429/x
  3. Step 3: Cross multiply
    721,856.52x = 996,020.82 × 453,429
  4. Step 4: Simplify right side
    721,856.52x = 451,624,724,391.78
  5. Step 5: Solve for x
    x = 451,624,724,391.78/721,856.52
  6. Step 6: Final answer
    x = 625,643.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.