Home / 831,640.80-1,247,461.20-453,727.20

Finding the Fourth Proportional to 831,640.80, 1,247,461.20 and 453,727.20

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Solution

The fourth proportional to 831,640.80, 1,247,461.20 and 453,727.20 is: 680,590.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,640.80 : 1,247,461.20 = 453,727.20 : x
  2. Step 2: Convert to fraction form
    831,640.80/1,247,461.20 = 453,727.20/x
  3. Step 3: Cross multiply
    831,640.80x = 1,247,461.20 × 453,727.20
  4. Step 4: Simplify right side
    831,640.80x = 566,007,077,384.64
  5. Step 5: Solve for x
    x = 566,007,077,384.64/831,640.80
  6. Step 6: Final answer
    x = 680,590.80

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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.