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Finding the Fourth Proportional to 529,257.92, 730,376.96 and 287,538.40

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Solution

The fourth proportional to 529,257.92, 730,376.96 and 287,538.40 is: 396,803.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,257.92 : 730,376.96 = 287,538.40 : x
  2. Step 2: Convert to fraction form
    529,257.92/730,376.96 = 287,538.40/x
  3. Step 3: Cross multiply
    529,257.92x = 730,376.96 × 287,538.40
  4. Step 4: Simplify right side
    529,257.92x = 210,011,422,475.26
  5. Step 5: Solve for x
    x = 210,011,422,475.26/529,257.92
  6. Step 6: Final answer
    x = 396,803.55

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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.