Home / 725,428.13-1,001,011.32-419,458.20

Finding the Fourth Proportional to 725,428.13, 1,001,011.32 and 419,458.20

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Solution

The fourth proportional to 725,428.13, 1,001,011.32 and 419,458.20 is: 578,806.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,428.13 : 1,001,011.32 = 419,458.20 : x
  2. Step 2: Convert to fraction form
    725,428.13/1,001,011.32 = 419,458.20/x
  3. Step 3: Cross multiply
    725,428.13x = 1,001,011.32 × 419,458.20
  4. Step 4: Simplify right side
    725,428.13x = 419,882,411,793.59
  5. Step 5: Solve for x
    x = 419,882,411,793.59/725,428.13
  6. Step 6: Final answer
    x = 578,806.36

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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.