Home / 338,428,279.80-507,642,419.70-83,126,647.80

Finding the Fourth Proportional to 338,428,279.80, 507,642,419.70 and 83,126,647.80

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Solution

The fourth proportional to 338,428,279.80, 507,642,419.70 and 83,126,647.80 is: 124,689,971.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,428,279.80 : 507,642,419.70 = 83,126,647.80 : x
  2. Step 2: Convert to fraction form
    338,428,279.80/507,642,419.70 = 83,126,647.80/x
  3. Step 3: Cross multiply
    338,428,279.80x = 507,642,419.70 × 83,126,647.80
  4. Step 4: Simplify right side
    338,428,279.80x = 42,198,612,630,741,680
  5. Step 5: Solve for x
    x = 42,198,612,630,741,680/338,428,279.80
  6. Step 6: Final answer
    x = 124,689,971.70

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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.