Home / 913,420.80-1,370,131.20-876,679.20

Finding the Fourth Proportional to 913,420.80, 1,370,131.20 and 876,679.20

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Solution

The fourth proportional to 913,420.80, 1,370,131.20 and 876,679.20 is: 1,315,018.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,420.80 : 1,370,131.20 = 876,679.20 : x
  2. Step 2: Convert to fraction form
    913,420.80/1,370,131.20 = 876,679.20/x
  3. Step 3: Cross multiply
    913,420.80x = 1,370,131.20 × 876,679.20
  4. Step 4: Simplify right side
    913,420.80x = 1,201,165,524,311.04
  5. Step 5: Solve for x
    x = 1,201,165,524,311.04/913,420.80
  6. Step 6: Final answer
    x = 1,315,018.80

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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.