Home / 768,086.20-1,152,647.70-431,126.20

Finding the Fourth Proportional to 768,086.20, 1,152,647.70 and 431,126.20

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Solution

The fourth proportional to 768,086.20, 1,152,647.70 and 431,126.20 is: 646,980.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,086.20 : 1,152,647.70 = 431,126.20 : x
  2. Step 2: Convert to fraction form
    768,086.20/1,152,647.70 = 431,126.20/x
  3. Step 3: Cross multiply
    768,086.20x = 1,152,647.70 × 431,126.20
  4. Step 4: Simplify right side
    768,086.20x = 496,936,622,839.74
  5. Step 5: Solve for x
    x = 496,936,622,839.74/768,086.20
  6. Step 6: Final answer
    x = 646,980.28

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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.