Home / 1,281,290.40-1,920,623.40-748,537.20

Finding the Fourth Proportional to 1,281,290.40, 1,920,623.40 and 748,537.20

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Solution

The fourth proportional to 1,281,290.40, 1,920,623.40 and 748,537.20 is: 1,122,039.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,290.40 : 1,920,623.40 = 748,537.20 : x
  2. Step 2: Convert to fraction form
    1,281,290.40/1,920,623.40 = 748,537.20/x
  3. Step 3: Cross multiply
    1,281,290.40x = 1,920,623.40 × 748,537.20
  4. Step 4: Simplify right side
    1,281,290.40x = 1,437,658,062,090.48
  5. Step 5: Solve for x
    x = 1,437,658,062,090.48/1,281,290.40
  6. Step 6: Final answer
    x = 1,122,039.21

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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.