Home / 391,017.11-586,588.93-121,081.79

Finding the Fourth Proportional to 391,017.11, 586,588.93 and 121,081.79

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Solution

The fourth proportional to 391,017.11, 586,588.93 and 121,081.79 is: 181,642.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,017.11 : 586,588.93 = 121,081.79 : x
  2. Step 2: Convert to fraction form
    391,017.11/586,588.93 = 121,081.79/x
  3. Step 3: Cross multiply
    391,017.11x = 586,588.93 × 121,081.79
  4. Step 4: Simplify right side
    391,017.11x = 71,025,238,802.35
  5. Step 5: Solve for x
    x = 71,025,238,802.35/391,017.11
  6. Step 6: Final answer
    x = 181,642.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.