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Finding the Fourth Proportional to 529,532.77, 730,762.55 and 287,815.21

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Solution

The fourth proportional to 529,532.77, 730,762.55 and 287,815.21 is: 397,188.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,532.77 : 730,762.55 = 287,815.21 : x
  2. Step 2: Convert to fraction form
    529,532.77/730,762.55 = 287,815.21/x
  3. Step 3: Cross multiply
    529,532.77x = 730,762.55 × 287,815.21
  4. Step 4: Simplify right side
    529,532.77x = 210,324,573,854.11
  5. Step 5: Solve for x
    x = 210,324,573,854.11/529,532.77
  6. Step 6: Final answer
    x = 397,188.97

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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.