Home / 1,419,605.60-2,129,408.40-915,720.80

Finding the Fourth Proportional to 1,419,605.60, 2,129,408.40 and 915,720.80

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Solution

The fourth proportional to 1,419,605.60, 2,129,408.40 and 915,720.80 is: 1,373,581.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419,605.60 : 2,129,408.40 = 915,720.80 : x
  2. Step 2: Convert to fraction form
    1,419,605.60/2,129,408.40 = 915,720.80/x
  3. Step 3: Cross multiply
    1,419,605.60x = 2,129,408.40 × 915,720.80
  4. Step 4: Simplify right side
    1,419,605.60x = 1,949,943,563,574.72
  5. Step 5: Solve for x
    x = 1,949,943,563,574.72/1,419,605.60
  6. Step 6: Final answer
    x = 1,373,581.20

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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.