Home / 714,811.68-986,401.44-392,564.16

Finding the Fourth Proportional to 714,811.68, 986,401.44 and 392,564.16

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Solution

The fourth proportional to 714,811.68, 986,401.44 and 392,564.16 is: 541,717.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,811.68 : 986,401.44 = 392,564.16 : x
  2. Step 2: Convert to fraction form
    714,811.68/986,401.44 = 392,564.16/x
  3. Step 3: Cross multiply
    714,811.68x = 986,401.44 × 392,564.16
  4. Step 4: Simplify right side
    714,811.68x = 387,225,852,716.39
  5. Step 5: Solve for x
    x = 387,225,852,716.39/714,811.68
  6. Step 6: Final answer
    x = 541,717.30

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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.