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Finding the Fourth Proportional to 529,499.06, 730,713.50 and 287,782.20

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Solution

The fourth proportional to 529,499.06, 730,713.50 and 287,782.20 is: 397,142.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,499.06 : 730,713.50 = 287,782.20 : x
  2. Step 2: Convert to fraction form
    529,499.06/730,713.50 = 287,782.20/x
  3. Step 3: Cross multiply
    529,499.06x = 730,713.50 × 287,782.20
  4. Step 4: Simplify right side
    529,499.06x = 210,286,337,160.79
  5. Step 5: Solve for x
    x = 210,286,337,160.79/529,499.06
  6. Step 6: Final answer
    x = 397,142.04

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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.