Home / 1,215,117.20-1,819,176.60-742,725.20

Finding the Fourth Proportional to 1,215,117.20, 1,819,176.60 and 742,725.20

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Solution

The fourth proportional to 1,215,117.20, 1,819,176.60 and 742,725.20 is: 1,111,948.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,117.20 : 1,819,176.60 = 742,725.20 : x
  2. Step 2: Convert to fraction form
    1,215,117.20/1,819,176.60 = 742,725.20/x
  3. Step 3: Cross multiply
    1,215,117.20x = 1,819,176.60 × 742,725.20
  4. Step 4: Simplify right side
    1,215,117.20x = 1,351,148,304,070.32
  5. Step 5: Solve for x
    x = 1,351,148,304,070.32/1,215,117.20
  6. Step 6: Final answer
    x = 1,111,948.96

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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.