Home / 1,281,473.40-1,920,897.90-748,720.20

Finding the Fourth Proportional to 1,281,473.40, 1,920,897.90 and 748,720.20

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Solution

The fourth proportional to 1,281,473.40, 1,920,897.90 and 748,720.20 is: 1,122,313.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,473.40 : 1,920,897.90 = 748,720.20 : x
  2. Step 2: Convert to fraction form
    1,281,473.40/1,920,897.90 = 748,720.20/x
  3. Step 3: Cross multiply
    1,281,473.40x = 1,920,897.90 × 748,720.20
  4. Step 4: Simplify right side
    1,281,473.40x = 1,438,215,059,867.58
  5. Step 5: Solve for x
    x = 1,438,215,059,867.58/1,281,473.40
  6. Step 6: Final answer
    x = 1,122,313.63

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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.