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Finding the Fourth Proportional to 675,052.60, 1,012,578.90 and 423,110.20

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Solution

The fourth proportional to 675,052.60, 1,012,578.90 and 423,110.20 is: 634,665.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,052.60 : 1,012,578.90 = 423,110.20 : x
  2. Step 2: Convert to fraction form
    675,052.60/1,012,578.90 = 423,110.20/x
  3. Step 3: Cross multiply
    675,052.60x = 1,012,578.90 × 423,110.20
  4. Step 4: Simplify right side
    675,052.60x = 428,432,460,894.78
  5. Step 5: Solve for x
    x = 428,432,460,894.78/675,052.60
  6. Step 6: Final answer
    x = 634,665.30

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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.