Home / 768,422.04-1,060,379.28-428,912.16

Finding the Fourth Proportional to 768,422.04, 1,060,379.28 and 428,912.16

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Solution

The fourth proportional to 768,422.04, 1,060,379.28 and 428,912.16 is: 591,874.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,422.04 : 1,060,379.28 = 428,912.16 : x
  2. Step 2: Convert to fraction form
    768,422.04/1,060,379.28 = 428,912.16/x
  3. Step 3: Cross multiply
    768,422.04x = 1,060,379.28 × 428,912.16
  4. Step 4: Simplify right side
    768,422.04x = 454,809,567,404.05
  5. Step 5: Solve for x
    x = 454,809,567,404.05/768,422.04
  6. Step 6: Final answer
    x = 591,874.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.