Home / 828,400.32-1,240,607.57-472,334.85

Finding the Fourth Proportional to 828,400.32, 1,240,607.57 and 472,334.85

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Solution

The fourth proportional to 828,400.32, 1,240,607.57 and 472,334.85 is: 707,365.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,400.32 : 1,240,607.57 = 472,334.85 : x
  2. Step 2: Convert to fraction form
    828,400.32/1,240,607.57 = 472,334.85/x
  3. Step 3: Cross multiply
    828,400.32x = 1,240,607.57 × 472,334.85
  4. Step 4: Simplify right side
    828,400.32x = 585,982,188,123.14
  5. Step 5: Solve for x
    x = 585,982,188,123.14/828,400.32
  6. Step 6: Final answer
    x = 707,365.96

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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.