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Finding the Fourth Proportional to 522,018.75, 783,028.13 and 128,034.75

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Solution

The fourth proportional to 522,018.75, 783,028.13 and 128,034.75 is: 192,052.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,018.75 : 783,028.13 = 128,034.75 : x
  2. Step 2: Convert to fraction form
    522,018.75/783,028.13 = 128,034.75/x
  3. Step 3: Cross multiply
    522,018.75x = 783,028.13 × 128,034.75
  4. Step 4: Simplify right side
    522,018.75x = 100,254,810,227.34
  5. Step 5: Solve for x
    x = 100,254,810,227.34/522,018.75
  6. Step 6: Final answer
    x = 192,052.13

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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.