Home / 1,290,877.44-1,935,987.12-915,325.80

Finding the Fourth Proportional to 1,290,877.44, 1,935,987.12 and 915,325.80

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Solution

The fourth proportional to 1,290,877.44, 1,935,987.12 and 915,325.80 is: 1,372,755.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,877.44 : 1,935,987.12 = 915,325.80 : x
  2. Step 2: Convert to fraction form
    1,290,877.44/1,935,987.12 = 915,325.80/x
  3. Step 3: Cross multiply
    1,290,877.44x = 1,935,987.12 × 915,325.80
  4. Step 4: Simplify right side
    1,290,877.44x = 1,772,058,959,403.70
  5. Step 5: Solve for x
    x = 1,772,058,959,403.70/1,290,877.44
  6. Step 6: Final answer
    x = 1,372,755.39

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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.