Home / 811,931.40-1,217,897.10-392,027.40

Finding the Fourth Proportional to 811,931.40, 1,217,897.10 and 392,027.40

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Solution

The fourth proportional to 811,931.40, 1,217,897.10 and 392,027.40 is: 588,041.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,931.40 : 1,217,897.10 = 392,027.40 : x
  2. Step 2: Convert to fraction form
    811,931.40/1,217,897.10 = 392,027.40/x
  3. Step 3: Cross multiply
    811,931.40x = 1,217,897.10 × 392,027.40
  4. Step 4: Simplify right side
    811,931.40x = 477,449,033,580.54
  5. Step 5: Solve for x
    x = 477,449,033,580.54/811,931.40
  6. Step 6: Final answer
    x = 588,041.10

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Similar ratio
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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.