Home / 725,969.15-1,001,861.90-399,307.42

Finding the Fourth Proportional to 725,969.15, 1,001,861.90 and 399,307.42

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Solution

The fourth proportional to 725,969.15, 1,001,861.90 and 399,307.42 is: 551,057.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,969.15 : 1,001,861.90 = 399,307.42 : x
  2. Step 2: Convert to fraction form
    725,969.15/1,001,861.90 = 399,307.42/x
  3. Step 3: Cross multiply
    725,969.15x = 1,001,861.90 × 399,307.42
  4. Step 4: Simplify right side
    725,969.15x = 400,050,891,238.49
  5. Step 5: Solve for x
    x = 400,050,891,238.49/725,969.15
  6. Step 6: Final answer
    x = 551,057.70

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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.