Home / 823,905.60-1,235,167.20-429,921.60

Finding the Fourth Proportional to 823,905.60, 1,235,167.20 and 429,921.60

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Solution

The fourth proportional to 823,905.60, 1,235,167.20 and 429,921.60 is: 644,521.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,905.60 : 1,235,167.20 = 429,921.60 : x
  2. Step 2: Convert to fraction form
    823,905.60/1,235,167.20 = 429,921.60/x
  3. Step 3: Cross multiply
    823,905.60x = 1,235,167.20 × 429,921.60
  4. Step 4: Simplify right side
    823,905.60x = 531,025,058,891.52
  5. Step 5: Solve for x
    x = 531,025,058,891.52/823,905.60
  6. Step 6: Final answer
    x = 644,521.73

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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.