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Finding the Fourth Proportional to 719,260.38, 992,574.42 and 396,970.47

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Solution

The fourth proportional to 719,260.38, 992,574.42 and 396,970.47 is: 547,816.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,260.38 : 992,574.42 = 396,970.47 : x
  2. Step 2: Convert to fraction form
    719,260.38/992,574.42 = 396,970.47/x
  3. Step 3: Cross multiply
    719,260.38x = 992,574.42 × 396,970.47
  4. Step 4: Simplify right side
    719,260.38x = 394,022,734,017.38
  5. Step 5: Solve for x
    x = 394,022,734,017.38/719,260.38
  6. Step 6: Final answer
    x = 547,816.54

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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.