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Finding the Fourth Proportional to 614,080.80, 921,121.20 and 456,616.80

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Solution

The fourth proportional to 614,080.80, 921,121.20 and 456,616.80 is: 684,925.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,080.80 : 921,121.20 = 456,616.80 : x
  2. Step 2: Convert to fraction form
    614,080.80/921,121.20 = 456,616.80/x
  3. Step 3: Cross multiply
    614,080.80x = 921,121.20 × 456,616.80
  4. Step 4: Simplify right side
    614,080.80x = 420,599,414,756.16
  5. Step 5: Solve for x
    x = 420,599,414,756.16/614,080.80
  6. Step 6: Final answer
    x = 684,925.20

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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.