Home / 338,428,276.80-507,642,415.20-83,126,644.80

Finding the Fourth Proportional to 338,428,276.80, 507,642,415.20 and 83,126,644.80

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Solution

The fourth proportional to 338,428,276.80, 507,642,415.20 and 83,126,644.80 is: 124,689,967.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,428,276.80 : 507,642,415.20 = 83,126,644.80 : x
  2. Step 2: Convert to fraction form
    338,428,276.80/507,642,415.20 = 83,126,644.80/x
  3. Step 3: Cross multiply
    338,428,276.80x = 507,642,415.20 × 83,126,644.80
  4. Step 4: Simplify right side
    338,428,276.80x = 42,198,610,733,744,520
  5. Step 5: Solve for x
    x = 42,198,610,733,744,520/338,428,276.80
  6. Step 6: Final answer
    x = 124,689,967.20

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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.