Home / 769,612.80-1,154,419.20-320,184.30

Finding the Fourth Proportional to 769,612.80, 1,154,419.20 and 320,184.30

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Solution

The fourth proportional to 769,612.80, 1,154,419.20 and 320,184.30 is: 480,276.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,612.80 : 1,154,419.20 = 320,184.30 : x
  2. Step 2: Convert to fraction form
    769,612.80/1,154,419.20 = 320,184.30/x
  3. Step 3: Cross multiply
    769,612.80x = 1,154,419.20 × 320,184.30
  4. Step 4: Simplify right side
    769,612.80x = 369,626,903,458.56
  5. Step 5: Solve for x
    x = 369,626,903,458.56/769,612.80
  6. Step 6: Final answer
    x = 480,276.45

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Double scale
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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.