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Finding the Fourth Proportional to 515,275.20, 772,912.80 and 496,612.80

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Solution

The fourth proportional to 515,275.20, 772,912.80 and 496,612.80 is: 744,919.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,275.20 : 772,912.80 = 496,612.80 : x
  2. Step 2: Convert to fraction form
    515,275.20/772,912.80 = 496,612.80/x
  3. Step 3: Cross multiply
    515,275.20x = 772,912.80 × 496,612.80
  4. Step 4: Simplify right side
    515,275.20x = 383,838,389,763.84
  5. Step 5: Solve for x
    x = 383,838,389,763.84/515,275.20
  6. Step 6: Final answer
    x = 744,919.20

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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.