Home / 725,854.50-1,001,679.21-407,902.50

Finding the Fourth Proportional to 725,854.50, 1,001,679.21 and 407,902.50

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Solution

The fourth proportional to 725,854.50, 1,001,679.21 and 407,902.50 is: 562,905.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,854.50 : 1,001,679.21 = 407,902.50 : x
  2. Step 2: Convert to fraction form
    725,854.50/1,001,679.21 = 407,902.50/x
  3. Step 3: Cross multiply
    725,854.50x = 1,001,679.21 × 407,902.50
  4. Step 4: Simplify right side
    725,854.50x = 408,587,453,957.03
  5. Step 5: Solve for x
    x = 408,587,453,957.03/725,854.50
  6. Step 6: Final answer
    x = 562,905.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.