Home / 726,019.20-1,086,436.80-459,907.20

Finding the Fourth Proportional to 726,019.20, 1,086,436.80 and 459,907.20

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Solution

The fourth proportional to 726,019.20, 1,086,436.80 and 459,907.20 is: 688,218.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,019.20 : 1,086,436.80 = 459,907.20 : x
  2. Step 2: Convert to fraction form
    726,019.20/1,086,436.80 = 459,907.20/x
  3. Step 3: Cross multiply
    726,019.20x = 1,086,436.80 × 459,907.20
  4. Step 4: Simplify right side
    726,019.20x = 499,660,106,664.96
  5. Step 5: Solve for x
    x = 499,660,106,664.96/726,019.20
  6. Step 6: Final answer
    x = 688,218.86

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1.5x scale

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.