Home / 644,555.20-965,911.20-474,750.40

Finding the Fourth Proportional to 644,555.20, 965,911.20 and 474,750.40

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Solution

The fourth proportional to 644,555.20, 965,911.20 and 474,750.40 is: 711,446.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,555.20 : 965,911.20 = 474,750.40 : x
  2. Step 2: Convert to fraction form
    644,555.20/965,911.20 = 474,750.40/x
  3. Step 3: Cross multiply
    644,555.20x = 965,911.20 × 474,750.40
  4. Step 4: Simplify right side
    644,555.20x = 458,566,728,564.48
  5. Step 5: Solve for x
    x = 458,566,728,564.48/644,555.20
  6. Step 6: Final answer
    x = 711,446.79

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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.