Home / 1,230,216.80-1,845,325.20-915,288.80

Finding the Fourth Proportional to 1,230,216.80, 1,845,325.20 and 915,288.80

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Solution

The fourth proportional to 1,230,216.80, 1,845,325.20 and 915,288.80 is: 1,372,933.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,216.80 : 1,845,325.20 = 915,288.80 : x
  2. Step 2: Convert to fraction form
    1,230,216.80/1,845,325.20 = 915,288.80/x
  3. Step 3: Cross multiply
    1,230,216.80x = 1,845,325.20 × 915,288.80
  4. Step 4: Simplify right side
    1,230,216.80x = 1,689,005,487,917.76
  5. Step 5: Solve for x
    x = 1,689,005,487,917.76/1,230,216.80
  6. Step 6: Final answer
    x = 1,372,933.20

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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.