Home / 725,127.80-1,000,836.42-402,948.68

Finding the Fourth Proportional to 725,127.80, 1,000,836.42 and 402,948.68

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Solution

The fourth proportional to 725,127.80, 1,000,836.42 and 402,948.68 is: 556,158.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,127.80 : 1,000,836.42 = 402,948.68 : x
  2. Step 2: Convert to fraction form
    725,127.80/1,000,836.42 = 402,948.68/x
  3. Step 3: Cross multiply
    725,127.80x = 1,000,836.42 × 402,948.68
  4. Step 4: Simplify right side
    725,127.80x = 403,285,714,334.93
  5. Step 5: Solve for x
    x = 403,285,714,334.93/725,127.80
  6. Step 6: Final answer
    x = 556,158.12

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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.