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Finding the Fourth Proportional to 713,316.20, 984,124.12 and 407,171.76

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Solution

The fourth proportional to 713,316.20, 984,124.12 and 407,171.76 is: 561,753.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,316.20 : 984,124.12 = 407,171.76 : x
  2. Step 2: Convert to fraction form
    713,316.20/984,124.12 = 407,171.76/x
  3. Step 3: Cross multiply
    713,316.20x = 984,124.12 × 407,171.76
  4. Step 4: Simplify right side
    713,316.20x = 400,707,549,998.85
  5. Step 5: Solve for x
    x = 400,707,549,998.85/713,316.20
  6. Step 6: Final answer
    x = 561,753.05

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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.