Home / 714,162.20-985,510.80-391,864.28

Finding the Fourth Proportional to 714,162.20, 985,510.80 and 391,864.28

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Solution

The fourth proportional to 714,162.20, 985,510.80 and 391,864.28 is: 540,754.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,162.20 : 985,510.80 = 391,864.28 : x
  2. Step 2: Convert to fraction form
    714,162.20/985,510.80 = 391,864.28/x
  3. Step 3: Cross multiply
    714,162.20x = 985,510.80 × 391,864.28
  4. Step 4: Simplify right side
    714,162.20x = 386,186,480,074.22
  5. Step 5: Solve for x
    x = 386,186,480,074.22/714,162.20
  6. Step 6: Final answer
    x = 540,754.58

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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.