Home / 538,289,270.65-807,433,906.43-129,345,421.15

Finding the Fourth Proportional to 538,289,270.65, 807,433,906.43 and 129,345,421.15

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Solution

The fourth proportional to 538,289,270.65, 807,433,906.43 and 129,345,421.15 is: 194,018,131.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,289,270.65 : 807,433,906.43 = 129,345,421.15 : x
  2. Step 2: Convert to fraction form
    538,289,270.65/807,433,906.43 = 129,345,421.15/x
  3. Step 3: Cross multiply
    538,289,270.65x = 807,433,906.43 × 129,345,421.15
  4. Step 4: Simplify right side
    538,289,270.65x = 104,437,878,679,310,704
  5. Step 5: Solve for x
    x = 104,437,878,679,310,704/538,289,270.65
  6. Step 6: Final answer
    x = 194,018,131.84

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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.