Home / 714,245.80-985,687.58-391,967.51

Finding the Fourth Proportional to 714,245.80, 985,687.58 and 391,967.51

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Solution

The fourth proportional to 714,245.80, 985,687.58 and 391,967.51 is: 540,930.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,245.80 : 985,687.58 = 391,967.51 : x
  2. Step 2: Convert to fraction form
    714,245.80/985,687.58 = 391,967.51/x
  3. Step 3: Cross multiply
    714,245.80x = 985,687.58 × 391,967.51
  4. Step 4: Simplify right side
    714,245.80x = 386,357,502,422.01
  5. Step 5: Solve for x
    x = 386,357,502,422.01/714,245.80
  6. Step 6: Final answer
    x = 540,930.73

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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.