Home / 1,239,812.40-1,856,032.20-742,148.40

Finding the Fourth Proportional to 1,239,812.40, 1,856,032.20 and 742,148.40

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Solution

The fourth proportional to 1,239,812.40, 1,856,032.20 and 742,148.40 is: 1,111,015.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,812.40 : 1,856,032.20 = 742,148.40 : x
  2. Step 2: Convert to fraction form
    1,239,812.40/1,856,032.20 = 742,148.40/x
  3. Step 3: Cross multiply
    1,239,812.40x = 1,856,032.20 × 742,148.40
  4. Step 4: Simplify right side
    1,239,812.40x = 1,377,451,327,578.48
  5. Step 5: Solve for x
    x = 1,377,451,327,578.48/1,239,812.40
  6. Step 6: Final answer
    x = 1,111,015.93

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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.