Home / 715,076.85-986,811.93-392,794.15

Finding the Fourth Proportional to 715,076.85, 986,811.93 and 392,794.15

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Solution

The fourth proportional to 715,076.85, 986,811.93 and 392,794.15 is: 542,059.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,076.85 : 986,811.93 = 392,794.15 : x
  2. Step 2: Convert to fraction form
    715,076.85/986,811.93 = 392,794.15/x
  3. Step 3: Cross multiply
    715,076.85x = 986,811.93 × 392,794.15
  4. Step 4: Simplify right side
    715,076.85x = 387,613,953,254.21
  5. Step 5: Solve for x
    x = 387,613,953,254.21/715,076.85
  6. Step 6: Final answer
    x = 542,059.16

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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.