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Finding the Fourth Proportional to 529,419.90, 730,597.06 and 287,697.90

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Solution

The fourth proportional to 529,419.90, 730,597.06 and 287,697.90 is: 397,021.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,419.90 : 730,597.06 = 287,697.90 : x
  2. Step 2: Convert to fraction form
    529,419.90/730,597.06 = 287,697.90/x
  3. Step 3: Cross multiply
    529,419.90x = 730,597.06 × 287,697.90
  4. Step 4: Simplify right side
    529,419.90x = 210,191,234,816.70
  5. Step 5: Solve for x
    x = 210,191,234,816.70/529,419.90
  6. Step 6: Final answer
    x = 397,021.79

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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.