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Finding the Fourth Proportional to 522,079.20, 783,118.80 and 515,080.80

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Solution

The fourth proportional to 522,079.20, 783,118.80 and 515,080.80 is: 772,621.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,079.20 : 783,118.80 = 515,080.80 : x
  2. Step 2: Convert to fraction form
    522,079.20/783,118.80 = 515,080.80/x
  3. Step 3: Cross multiply
    522,079.20x = 783,118.80 × 515,080.80
  4. Step 4: Simplify right side
    522,079.20x = 403,369,457,999.04
  5. Step 5: Solve for x
    x = 403,369,457,999.04/522,079.20
  6. Step 6: Final answer
    x = 772,621.20

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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.