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Finding the Fourth Proportional to 577,998.90, 866,998.35 and 311,622.30

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Solution

The fourth proportional to 577,998.90, 866,998.35 and 311,622.30 is: 467,433.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,998.90 : 866,998.35 = 311,622.30 : x
  2. Step 2: Convert to fraction form
    577,998.90/866,998.35 = 311,622.30/x
  3. Step 3: Cross multiply
    577,998.90x = 866,998.35 × 311,622.30
  4. Step 4: Simplify right side
    577,998.90x = 270,176,019,923.21
  5. Step 5: Solve for x
    x = 270,176,019,923.21/577,998.90
  6. Step 6: Final answer
    x = 467,433.45

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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.