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Finding the Fourth Proportional to 719,349.13, 992,701.89 and 397,059.34

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Solution

The fourth proportional to 719,349.13, 992,701.89 and 397,059.34 is: 547,941.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,349.13 : 992,701.89 = 397,059.34 : x
  2. Step 2: Convert to fraction form
    719,349.13/992,701.89 = 397,059.34/x
  3. Step 3: Cross multiply
    719,349.13x = 992,701.89 × 397,059.34
  4. Step 4: Simplify right side
    719,349.13x = 394,161,557,260.15
  5. Step 5: Solve for x
    x = 394,161,557,260.15/719,349.13
  6. Step 6: Final answer
    x = 547,941.94

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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.