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Finding the Fourth Proportional to 571,035.20, 856,552.80 and 512,052.80

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Solution

The fourth proportional to 571,035.20, 856,552.80 and 512,052.80 is: 768,079.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,035.20 : 856,552.80 = 512,052.80 : x
  2. Step 2: Convert to fraction form
    571,035.20/856,552.80 = 512,052.80/x
  3. Step 3: Cross multiply
    571,035.20x = 856,552.80 × 512,052.80
  4. Step 4: Simplify right side
    571,035.20x = 438,600,259,587.84
  5. Step 5: Solve for x
    x = 438,600,259,587.84/571,035.20
  6. Step 6: Final answer
    x = 768,079.20

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Similar ratio
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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.