Home / 538,105,779.28-807,158,679.60-129,161,929.84

Finding the Fourth Proportional to 538,105,779.28, 807,158,679.60 and 129,161,929.84

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Solution

The fourth proportional to 538,105,779.28, 807,158,679.60 and 129,161,929.84 is: 193,742,897.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,105,779.28 : 807,158,679.60 = 129,161,929.84 : x
  2. Step 2: Convert to fraction form
    538,105,779.28/807,158,679.60 = 129,161,929.84/x
  3. Step 3: Cross multiply
    538,105,779.28x = 807,158,679.60 × 129,161,929.84
  4. Step 4: Simplify right side
    538,105,779.28x = 104,254,172,744,242,240
  5. Step 5: Solve for x
    x = 104,254,172,744,242,240/538,105,779.28
  6. Step 6: Final answer
    x = 193,742,897.32

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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.