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Finding the Fourth Proportional to 529,356.76, 730,599.42 and 386,589.40

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Solution

The fourth proportional to 529,356.76, 730,599.42 and 386,589.40 is: 533,556.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,356.76 : 730,599.42 = 386,589.40 : x
  2. Step 2: Convert to fraction form
    529,356.76/730,599.42 = 386,589.40/x
  3. Step 3: Cross multiply
    529,356.76x = 730,599.42 × 386,589.40
  4. Step 4: Simplify right side
    529,356.76x = 282,441,991,418.15
  5. Step 5: Solve for x
    x = 282,441,991,418.15/529,356.76
  6. Step 6: Final answer
    x = 533,556.97

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Double scale
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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.