Home / 691,105.22-1,036,798.76-391,719.50

Finding the Fourth Proportional to 691,105.22, 1,036,798.76 and 391,719.50

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Solution

The fourth proportional to 691,105.22, 1,036,798.76 and 391,719.50 is: 587,659.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,105.22 : 1,036,798.76 = 391,719.50 : x
  2. Step 2: Convert to fraction form
    691,105.22/1,036,798.76 = 391,719.50/x
  3. Step 3: Cross multiply
    691,105.22x = 1,036,798.76 × 391,719.50
  4. Step 4: Simplify right side
    691,105.22x = 406,134,291,867.82
  5. Step 5: Solve for x
    x = 406,134,291,867.82/691,105.22
  6. Step 6: Final answer
    x = 587,659.13

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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.