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Finding the Fourth Proportional to 719,358.92, 992,715.37 and 397,069.10

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Solution

The fourth proportional to 719,358.92, 992,715.37 and 397,069.10 is: 547,955.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,358.92 : 992,715.37 = 397,069.10 : x
  2. Step 2: Convert to fraction form
    719,358.92/992,715.37 = 397,069.10/x
  3. Step 3: Cross multiply
    719,358.92x = 992,715.37 × 397,069.10
  4. Step 4: Simplify right side
    719,358.92x = 394,176,600,011.18
  5. Step 5: Solve for x
    x = 394,176,600,011.18/719,358.92
  6. Step 6: Final answer
    x = 547,955.39

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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.