Home / 714,723.94-986,312.16-392,431.24

Finding the Fourth Proportional to 714,723.94, 986,312.16 and 392,431.24

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Solution

The fourth proportional to 714,723.94, 986,312.16 and 392,431.24 is: 541,551.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,723.94 : 986,312.16 = 392,431.24 : x
  2. Step 2: Convert to fraction form
    714,723.94/986,312.16 = 392,431.24/x
  3. Step 3: Cross multiply
    714,723.94x = 986,312.16 × 392,431.24
  4. Step 4: Simplify right side
    714,723.94x = 387,059,703,975.88
  5. Step 5: Solve for x
    x = 387,059,703,975.88/714,723.94
  6. Step 6: Final answer
    x = 541,551.34

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Double scale
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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.