Home / 768,085.20-1,152,646.20-431,125.20

Finding the Fourth Proportional to 768,085.20, 1,152,646.20 and 431,125.20

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Solution

The fourth proportional to 768,085.20, 1,152,646.20 and 431,125.20 is: 646,978.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,085.20 : 1,152,646.20 = 431,125.20 : x
  2. Step 2: Convert to fraction form
    768,085.20/1,152,646.20 = 431,125.20/x
  3. Step 3: Cross multiply
    768,085.20x = 1,152,646.20 × 431,125.20
  4. Step 4: Simplify right side
    768,085.20x = 496,934,823,504.24
  5. Step 5: Solve for x
    x = 496,934,823,504.24/768,085.20
  6. Step 6: Final answer
    x = 646,978.78

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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.