Home / 438,286,715.31-657,275,001.69-127,329,637.56

Finding the Fourth Proportional to 438,286,715.31, 657,275,001.69 and 127,329,637.56

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Solution

The fourth proportional to 438,286,715.31, 657,275,001.69 and 127,329,637.56 is: 190,949,405.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,286,715.31 : 657,275,001.69 = 127,329,637.56 : x
  2. Step 2: Convert to fraction form
    438,286,715.31/657,275,001.69 = 127,329,637.56/x
  3. Step 3: Cross multiply
    438,286,715.31x = 657,275,001.69 × 127,329,637.56
  4. Step 4: Simplify right side
    438,286,715.31x = 83,690,587,742,436,096
  5. Step 5: Solve for x
    x = 83,690,587,742,436,096/438,286,715.31
  6. Step 6: Final answer
    x = 190,949,405.54

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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.