Home / 538,105,780.28-807,158,681.10-129,161,930.84

Finding the Fourth Proportional to 538,105,780.28, 807,158,681.10 and 129,161,930.84

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Solution

The fourth proportional to 538,105,780.28, 807,158,681.10 and 129,161,930.84 is: 193,742,898.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,105,780.28 : 807,158,681.10 = 129,161,930.84 : x
  2. Step 2: Convert to fraction form
    538,105,780.28/807,158,681.10 = 129,161,930.84/x
  3. Step 3: Cross multiply
    538,105,780.28x = 807,158,681.10 × 129,161,930.84
  4. Step 4: Simplify right side
    538,105,780.28x = 104,254,173,745,143,824
  5. Step 5: Solve for x
    x = 104,254,173,745,143,824/538,105,780.28
  6. Step 6: Final answer
    x = 193,742,898.82

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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.