Home / 873,664.28-1,205,695.50-491,715.80

Finding the Fourth Proportional to 873,664.28, 1,205,695.50 and 491,715.80

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Solution

The fourth proportional to 873,664.28, 1,205,695.50 and 491,715.80 is: 678,589.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,664.28 : 1,205,695.50 = 491,715.80 : x
  2. Step 2: Convert to fraction form
    873,664.28/1,205,695.50 = 491,715.80/x
  3. Step 3: Cross multiply
    873,664.28x = 1,205,695.50 × 491,715.80
  4. Step 4: Simplify right side
    873,664.28x = 592,859,527,338.90
  5. Step 5: Solve for x
    x = 592,859,527,338.90/873,664.28
  6. Step 6: Final answer
    x = 678,589.64

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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.