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Finding the Fourth Proportional to 719,052.60, 992,253.96 and 396,699.60

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Solution

The fourth proportional to 719,052.60, 992,253.96 and 396,699.60 is: 547,424.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,052.60 : 992,253.96 = 396,699.60 : x
  2. Step 2: Convert to fraction form
    719,052.60/992,253.96 = 396,699.60/x
  3. Step 3: Cross multiply
    719,052.60x = 992,253.96 × 396,699.60
  4. Step 4: Simplify right side
    719,052.60x = 393,626,749,030.42
  5. Step 5: Solve for x
    x = 393,626,749,030.42/719,052.60
  6. Step 6: Final answer
    x = 547,424.14

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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.