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Finding the Fourth Proportional to 713,192.20, 984,229.04 and 390,903.12

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Solution

The fourth proportional to 713,192.20, 984,229.04 and 390,903.12 is: 539,459.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,192.20 : 984,229.04 = 390,903.12 : x
  2. Step 2: Convert to fraction form
    713,192.20/984,229.04 = 390,903.12/x
  3. Step 3: Cross multiply
    713,192.20x = 984,229.04 × 390,903.12
  4. Step 4: Simplify right side
    713,192.20x = 384,738,204,626.88
  5. Step 5: Solve for x
    x = 384,738,204,626.88/713,192.20
  6. Step 6: Final answer
    x = 539,459.36

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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.