Home / 1,280,324,862.48-1,920,264,744.60-359,982,774.80

Finding the Fourth Proportional to 1,280,324,862.48, 1,920,264,744.60 and 359,982,774.80

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Solution

The fourth proportional to 1,280,324,862.48, 1,920,264,744.60 and 359,982,774.80 is: 539,911,589.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,324,862.48 : 1,920,264,744.60 = 359,982,774.80 : x
  2. Step 2: Convert to fraction form
    1,280,324,862.48/1,920,264,744.60 = 359,982,774.80/x
  3. Step 3: Cross multiply
    1,280,324,862.48x = 1,920,264,744.60 × 359,982,774.80
  4. Step 4: Simplify right side
    1,280,324,862.48x = 691,262,231,111,721,344
  5. Step 5: Solve for x
    x = 691,262,231,111,721,344/1,280,324,862.48
  6. Step 6: Final answer
    x = 539,911,589.14

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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.