Home / 680,780.63-1,019,939.13-490,209.23

Finding the Fourth Proportional to 680,780.63, 1,019,939.13 and 490,209.23

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Solution

The fourth proportional to 680,780.63, 1,019,939.13 and 490,209.23 is: 734,426.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,780.63 : 1,019,939.13 = 490,209.23 : x
  2. Step 2: Convert to fraction form
    680,780.63/1,019,939.13 = 490,209.23/x
  3. Step 3: Cross multiply
    680,780.63x = 1,019,939.13 × 490,209.23
  4. Step 4: Simplify right side
    680,780.63x = 499,983,570,464.47
  5. Step 5: Solve for x
    x = 499,983,570,464.47/680,780.63
  6. Step 6: Final answer
    x = 734,426.85

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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.