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Finding the Fourth Proportional to 820,177.92, 1,230,660 and 446,200.32

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Solution

The fourth proportional to 820,177.92, 1,230,660 and 446,200.32 is: 669,514.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,177.92 : 1,230,660 = 446,200.32 : x
  2. Step 2: Convert to fraction form
    820,177.92/1,230,660 = 446,200.32/x
  3. Step 3: Cross multiply
    820,177.92x = 1,230,660 × 446,200.32
  4. Step 4: Simplify right side
    820,177.92x = 549,120,885,811.20
  5. Step 5: Solve for x
    x = 549,120,885,811.20/820,177.92
  6. Step 6: Final answer
    x = 669,514.35

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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.