Home / 1,239,810.40-1,856,029.20-742,146.40

Finding the Fourth Proportional to 1,239,810.40, 1,856,029.20 and 742,146.40

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Solution

The fourth proportional to 1,239,810.40, 1,856,029.20 and 742,146.40 is: 1,111,012.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,810.40 : 1,856,029.20 = 742,146.40 : x
  2. Step 2: Convert to fraction form
    1,239,810.40/1,856,029.20 = 742,146.40/x
  3. Step 3: Cross multiply
    1,239,810.40x = 1,856,029.20 × 742,146.40
  4. Step 4: Simplify right side
    1,239,810.40x = 1,377,445,389,074.88
  5. Step 5: Solve for x
    x = 1,377,445,389,074.88/1,239,810.40
  6. Step 6: Final answer
    x = 1,111,012.93

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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.