Home / 460,043.20-690,064.80-127,619.20

Finding the Fourth Proportional to 460,043.20, 690,064.80 and 127,619.20

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Solution

The fourth proportional to 460,043.20, 690,064.80 and 127,619.20 is: 191,428.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,043.20 : 690,064.80 = 127,619.20 : x
  2. Step 2: Convert to fraction form
    460,043.20/690,064.80 = 127,619.20/x
  3. Step 3: Cross multiply
    460,043.20x = 690,064.80 × 127,619.20
  4. Step 4: Simplify right side
    460,043.20x = 88,065,517,724.16
  5. Step 5: Solve for x
    x = 88,065,517,724.16/460,043.20
  6. Step 6: Final answer
    x = 191,428.80

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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.