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Finding the Fourth Proportional to 529,480.55, 730,688.84 and 287,763.15

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Solution

The fourth proportional to 529,480.55, 730,688.84 and 287,763.15 is: 397,116.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,480.55 : 730,688.84 = 287,763.15 : x
  2. Step 2: Convert to fraction form
    529,480.55/730,688.84 = 287,763.15/x
  3. Step 3: Cross multiply
    529,480.55x = 730,688.84 × 287,763.15
  4. Step 4: Simplify right side
    529,480.55x = 210,265,320,829.43
  5. Step 5: Solve for x
    x = 210,265,320,829.43/529,480.55
  6. Step 6: Final answer
    x = 397,116.24

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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.