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Finding the Fourth Proportional to 614,570.20, 921,855.30 and 314,951.20

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Solution

The fourth proportional to 614,570.20, 921,855.30 and 314,951.20 is: 472,426.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,570.20 : 921,855.30 = 314,951.20 : x
  2. Step 2: Convert to fraction form
    614,570.20/921,855.30 = 314,951.20/x
  3. Step 3: Cross multiply
    614,570.20x = 921,855.30 × 314,951.20
  4. Step 4: Simplify right side
    614,570.20x = 290,339,432,961.36
  5. Step 5: Solve for x
    x = 290,339,432,961.36/614,570.20
  6. Step 6: Final answer
    x = 472,426.80

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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.