Home / 787,713.30-1,181,569.95-388,545.30

Finding the Fourth Proportional to 787,713.30, 1,181,569.95 and 388,545.30

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Solution

The fourth proportional to 787,713.30, 1,181,569.95 and 388,545.30 is: 582,817.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,713.30 : 1,181,569.95 = 388,545.30 : x
  2. Step 2: Convert to fraction form
    787,713.30/1,181,569.95 = 388,545.30/x
  3. Step 3: Cross multiply
    787,713.30x = 1,181,569.95 × 388,545.30
  4. Step 4: Simplify right side
    787,713.30x = 459,093,450,693.74
  5. Step 5: Solve for x
    x = 459,093,450,693.74/787,713.30
  6. Step 6: Final answer
    x = 582,817.95

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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.