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Finding the Fourth Proportional to 713,193.20, 984,230.42 and 390,904.12

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Solution

The fourth proportional to 713,193.20, 984,230.42 and 390,904.12 is: 539,460.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,193.20 : 984,230.42 = 390,904.12 : x
  2. Step 2: Convert to fraction form
    713,193.20/984,230.42 = 390,904.12/x
  3. Step 3: Cross multiply
    713,193.20x = 984,230.42 × 390,904.12
  4. Step 4: Simplify right side
    713,193.20x = 384,739,726,207.33
  5. Step 5: Solve for x
    x = 384,739,726,207.33/713,193.20
  6. Step 6: Final answer
    x = 539,460.73

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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.