Home / 831,711.80-1,247,567.70-453,798.20

Finding the Fourth Proportional to 831,711.80, 1,247,567.70 and 453,798.20

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Solution

The fourth proportional to 831,711.80, 1,247,567.70 and 453,798.20 is: 680,697.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,711.80 : 1,247,567.70 = 453,798.20 : x
  2. Step 2: Convert to fraction form
    831,711.80/1,247,567.70 = 453,798.20/x
  3. Step 3: Cross multiply
    831,711.80x = 1,247,567.70 × 453,798.20
  4. Step 4: Simplify right side
    831,711.80x = 566,143,976,638.14
  5. Step 5: Solve for x
    x = 566,143,976,638.14/831,711.80
  6. Step 6: Final answer
    x = 680,697.30

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Double scale
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Similar ratio
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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.