Home / 338,429,860.80-507,644,791.20-83,128,228.80

Finding the Fourth Proportional to 338,429,860.80, 507,644,791.20 and 83,128,228.80

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Solution

The fourth proportional to 338,429,860.80, 507,644,791.20 and 83,128,228.80 is: 124,692,343.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,429,860.80 : 507,644,791.20 = 83,128,228.80 : x
  2. Step 2: Convert to fraction form
    338,429,860.80/507,644,791.20 = 83,128,228.80/x
  3. Step 3: Cross multiply
    338,429,860.80x = 507,644,791.20 × 83,128,228.80
  4. Step 4: Simplify right side
    338,429,860.80x = 42,199,612,352,001,824
  5. Step 5: Solve for x
    x = 42,199,612,352,001,824/338,429,860.80
  6. Step 6: Final answer
    x = 124,692,343.20

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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.