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Finding the Fourth Proportional to 530,471.57, 732,060.12 and 288,761.09

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Solution

The fourth proportional to 530,471.57, 732,060.12 and 288,761.09 is: 398,495.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,471.57 : 732,060.12 = 288,761.09 : x
  2. Step 2: Convert to fraction form
    530,471.57/732,060.12 = 288,761.09/x
  3. Step 3: Cross multiply
    530,471.57x = 732,060.12 × 288,761.09
  4. Step 4: Simplify right side
    530,471.57x = 211,390,480,026.88
  5. Step 5: Solve for x
    x = 211,390,480,026.88/530,471.57
  6. Step 6: Final answer
    x = 398,495.40

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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.