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Finding the Fourth Proportional to 529,205.32, 730,309.55 and 287,491.70

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Solution

The fourth proportional to 529,205.32, 730,309.55 and 287,491.70 is: 396,741.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,205.32 : 730,309.55 = 287,491.70 : x
  2. Step 2: Convert to fraction form
    529,205.32/730,309.55 = 287,491.70/x
  3. Step 3: Cross multiply
    529,205.32x = 730,309.55 × 287,491.70
  4. Step 4: Simplify right side
    529,205.32x = 209,957,931,953.20
  5. Step 5: Solve for x
    x = 209,957,931,953.20/529,205.32
  6. Step 6: Final answer
    x = 396,741.92

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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.