Home / 786,007.60-1,178,233.80-386,321.20

Finding the Fourth Proportional to 786,007.60, 1,178,233.80 and 386,321.20

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Solution

The fourth proportional to 786,007.60, 1,178,233.80 and 386,321.20 is: 579,099.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,007.60 : 1,178,233.80 = 386,321.20 : x
  2. Step 2: Convert to fraction form
    786,007.60/1,178,233.80 = 386,321.20/x
  3. Step 3: Cross multiply
    786,007.60x = 1,178,233.80 × 386,321.20
  4. Step 4: Simplify right side
    786,007.60x = 455,176,695,496.56
  5. Step 5: Solve for x
    x = 455,176,695,496.56/786,007.60
  6. Step 6: Final answer
    x = 579,099.61

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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.