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Finding the Fourth Proportional to 614,436.60, 921,654.90 and 401,860.20

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Solution

The fourth proportional to 614,436.60, 921,654.90 and 401,860.20 is: 602,790.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,436.60 : 921,654.90 = 401,860.20 : x
  2. Step 2: Convert to fraction form
    614,436.60/921,654.90 = 401,860.20/x
  3. Step 3: Cross multiply
    614,436.60x = 921,654.90 × 401,860.20
  4. Step 4: Simplify right side
    614,436.60x = 370,376,422,444.98
  5. Step 5: Solve for x
    x = 370,376,422,444.98/614,436.60
  6. Step 6: Final answer
    x = 602,790.30

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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.