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Finding the Fourth Proportional to 529,420.52, 730,597.92 and 287,698.52

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Solution

The fourth proportional to 529,420.52, 730,597.92 and 287,698.52 is: 397,022.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,420.52 : 730,597.92 = 287,698.52 : x
  2. Step 2: Convert to fraction form
    529,420.52/730,597.92 = 287,698.52/x
  3. Step 3: Cross multiply
    529,420.52x = 730,597.92 × 287,698.52
  4. Step 4: Simplify right side
    529,420.52x = 210,191,940,299.08
  5. Step 5: Solve for x
    x = 210,191,940,299.08/529,420.52
  6. Step 6: Final answer
    x = 397,022.65

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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.