Home / 811,928.40-1,217,892.60-392,024.40

Finding the Fourth Proportional to 811,928.40, 1,217,892.60 and 392,024.40

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Solution

The fourth proportional to 811,928.40, 1,217,892.60 and 392,024.40 is: 588,036.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,928.40 : 1,217,892.60 = 392,024.40 : x
  2. Step 2: Convert to fraction form
    811,928.40/1,217,892.60 = 392,024.40/x
  3. Step 3: Cross multiply
    811,928.40x = 1,217,892.60 × 392,024.40
  4. Step 4: Simplify right side
    811,928.40x = 477,443,615,779.44
  5. Step 5: Solve for x
    x = 477,443,615,779.44/811,928.40
  6. Step 6: Final answer
    x = 588,036.60

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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.