Home / 691,103.22-1,036,795.76-391,717.50

Finding the Fourth Proportional to 691,103.22, 1,036,795.76 and 391,717.50

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Solution

The fourth proportional to 691,103.22, 1,036,795.76 and 391,717.50 is: 587,656.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,103.22 : 1,036,795.76 = 391,717.50 : x
  2. Step 2: Convert to fraction form
    691,103.22/1,036,795.76 = 391,717.50/x
  3. Step 3: Cross multiply
    691,103.22x = 1,036,795.76 × 391,717.50
  4. Step 4: Simplify right side
    691,103.22x = 406,131,043,117.80
  5. Step 5: Solve for x
    x = 406,131,043,117.80/691,103.22
  6. Step 6: Final answer
    x = 587,656.13

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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.