Home / 725,076.80-1,000,578.16-402,807.12

Finding the Fourth Proportional to 725,076.80, 1,000,578.16 and 402,807.12

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Solution

The fourth proportional to 725,076.80, 1,000,578.16 and 402,807.12 is: 555,858.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,076.80 : 1,000,578.16 = 402,807.12 : x
  2. Step 2: Convert to fraction form
    725,076.80/1,000,578.16 = 402,807.12/x
  3. Step 3: Cross multiply
    725,076.80x = 1,000,578.16 × 402,807.12
  4. Step 4: Simplify right side
    725,076.80x = 403,040,006,964.50
  5. Step 5: Solve for x
    x = 403,040,006,964.50/725,076.80
  6. Step 6: Final answer
    x = 555,858.37

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1.5x scale

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.