Home / 714,664.64-986,239.16-392,395.61

Finding the Fourth Proportional to 714,664.64, 986,239.16 and 392,395.61

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Solution

The fourth proportional to 714,664.64, 986,239.16 and 392,395.61 is: 541,507.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,664.64 : 986,239.16 = 392,395.61 : x
  2. Step 2: Convert to fraction form
    714,664.64/986,239.16 = 392,395.61/x
  3. Step 3: Cross multiply
    714,664.64x = 986,239.16 × 392,395.61
  4. Step 4: Simplify right side
    714,664.64x = 386,995,914,832.11
  5. Step 5: Solve for x
    x = 386,995,914,832.11/714,664.64
  6. Step 6: Final answer
    x = 541,507.01

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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.