Home / 714,218.92-985,637.16-391,926.20

Finding the Fourth Proportional to 714,218.92, 985,637.16 and 391,926.20

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Solution

The fourth proportional to 714,218.92, 985,637.16 and 391,926.20 is: 540,866.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,218.92 : 985,637.16 = 391,926.20 : x
  2. Step 2: Convert to fraction form
    714,218.92/985,637.16 = 391,926.20/x
  3. Step 3: Cross multiply
    714,218.92x = 985,637.16 × 391,926.20
  4. Step 4: Simplify right side
    714,218.92x = 386,297,021,769.41
  5. Step 5: Solve for x
    x = 386,297,021,769.41/714,218.92
  6. Step 6: Final answer
    x = 540,866.41

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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.