Home / 725,000.82-1,000,500.62-402,740.90

Finding the Fourth Proportional to 725,000.82, 1,000,500.62 and 402,740.90

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Solution

The fourth proportional to 725,000.82, 1,000,500.62 and 402,740.90 is: 555,782.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,000.82 : 1,000,500.62 = 402,740.90 : x
  2. Step 2: Convert to fraction form
    725,000.82/1,000,500.62 = 402,740.90/x
  3. Step 3: Cross multiply
    725,000.82x = 1,000,500.62 × 402,740.90
  4. Step 4: Simplify right side
    725,000.82x = 402,942,520,149.36
  5. Step 5: Solve for x
    x = 402,942,520,149.36/725,000.82
  6. Step 6: Final answer
    x = 555,782.16

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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.