Home / 840,779.15-1,159,972.02-647,246.12

Finding the Fourth Proportional to 840,779.15, 1,159,972.02 and 647,246.12

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Solution

The fourth proportional to 840,779.15, 1,159,972.02 and 647,246.12 is: 892,966.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,779.15 : 1,159,972.02 = 647,246.12 : x
  2. Step 2: Convert to fraction form
    840,779.15/1,159,972.02 = 647,246.12/x
  3. Step 3: Cross multiply
    840,779.15x = 1,159,972.02 × 647,246.12
  4. Step 4: Simplify right side
    840,779.15x = 750,787,383,117.40
  5. Step 5: Solve for x
    x = 750,787,383,117.40/840,779.15
  6. Step 6: Final answer
    x = 892,966.23

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Double scale
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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.