Home / 719,517.35-992,918.16-392,819.19

Finding the Fourth Proportional to 719,517.35, 992,918.16 and 392,819.19

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Solution

The fourth proportional to 719,517.35, 992,918.16 and 392,819.19 is: 542,081.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,517.35 : 992,918.16 = 392,819.19 : x
  2. Step 2: Convert to fraction form
    719,517.35/992,918.16 = 392,819.19/x
  3. Step 3: Cross multiply
    719,517.35x = 992,918.16 × 392,819.19
  4. Step 4: Simplify right side
    719,517.35x = 390,037,307,347.49
  5. Step 5: Solve for x
    x = 390,037,307,347.49/719,517.35
  6. Step 6: Final answer
    x = 542,081.87

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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.