Home / 715,007.92-986,719.04-392,725.52

Finding the Fourth Proportional to 715,007.92, 986,719.04 and 392,725.52

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Solution

The fourth proportional to 715,007.92, 986,719.04 and 392,725.52 is: 541,965.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,007.92 : 986,719.04 = 392,725.52 : x
  2. Step 2: Convert to fraction form
    715,007.92/986,719.04 = 392,725.52/x
  3. Step 3: Cross multiply
    715,007.92x = 986,719.04 × 392,725.52
  4. Step 4: Simplify right side
    715,007.92x = 387,509,748,077.90
  5. Step 5: Solve for x
    x = 387,509,748,077.90/715,007.92
  6. Step 6: Final answer
    x = 541,965.67

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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.