Home / 715,008.51-986,719.86-392,726.16

Finding the Fourth Proportional to 715,008.51, 986,719.86 and 392,726.16

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Solution

The fourth proportional to 715,008.51, 986,719.86 and 392,726.16 is: 541,966.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,008.51 : 986,719.86 = 392,726.16 : x
  2. Step 2: Convert to fraction form
    715,008.51/986,719.86 = 392,726.16/x
  3. Step 3: Cross multiply
    715,008.51x = 986,719.86 × 392,726.16
  4. Step 4: Simplify right side
    715,008.51x = 387,510,701,613.54
  5. Step 5: Solve for x
    x = 387,510,701,613.54/715,008.51
  6. Step 6: Final answer
    x = 541,966.56

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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.