Home / 1,276,821.80-1,915,076.64-330,113.24

Finding the Fourth Proportional to 1,276,821.80, 1,915,076.64 and 330,113.24

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Solution

The fourth proportional to 1,276,821.80, 1,915,076.64 and 330,113.24 is: 495,129.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,821.80 : 1,915,076.64 = 330,113.24 : x
  2. Step 2: Convert to fraction form
    1,276,821.80/1,915,076.64 = 330,113.24/x
  3. Step 3: Cross multiply
    1,276,821.80x = 1,915,076.64 × 330,113.24
  4. Step 4: Simplify right side
    1,276,821.80x = 632,192,154,478.71
  5. Step 5: Solve for x
    x = 632,192,154,478.71/1,276,821.80
  6. Step 6: Final answer
    x = 495,129.51

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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.