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Finding the Fourth Proportional to 529,069.82, 730,125.07 and 287,352.57

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Solution

The fourth proportional to 529,069.82, 730,125.07 and 287,352.57 is: 396,551.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,069.82 : 730,125.07 = 287,352.57 : x
  2. Step 2: Convert to fraction form
    529,069.82/730,125.07 = 287,352.57/x
  3. Step 3: Cross multiply
    529,069.82x = 730,125.07 × 287,352.57
  4. Step 4: Simplify right side
    529,069.82x = 209,803,314,567.55
  5. Step 5: Solve for x
    x = 209,803,314,567.55/529,069.82
  6. Step 6: Final answer
    x = 396,551.28

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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.