Home / 615,681.40-921,966.90-404,174.20

Finding the Fourth Proportional to 615,681.40, 921,966.90 and 404,174.20

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Solution

The fourth proportional to 615,681.40, 921,966.90 and 404,174.20 is: 605,240.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,681.40 : 921,966.90 = 404,174.20 : x
  2. Step 2: Convert to fraction form
    615,681.40/921,966.90 = 404,174.20/x
  3. Step 3: Cross multiply
    615,681.40x = 921,966.90 × 404,174.20
  4. Step 4: Simplify right side
    615,681.40x = 372,635,234,233.98
  5. Step 5: Solve for x
    x = 372,635,234,233.98/615,681.40
  6. Step 6: Final answer
    x = 605,240.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.