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Finding the Fourth Proportional to 511,272.20, 766,908.30 and 322,315.40

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Solution

The fourth proportional to 511,272.20, 766,908.30 and 322,315.40 is: 483,473.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,272.20 : 766,908.30 = 322,315.40 : x
  2. Step 2: Convert to fraction form
    511,272.20/766,908.30 = 322,315.40/x
  3. Step 3: Cross multiply
    511,272.20x = 766,908.30 × 322,315.40
  4. Step 4: Simplify right side
    511,272.20x = 247,186,355,477.82
  5. Step 5: Solve for x
    x = 247,186,355,477.82/511,272.20
  6. Step 6: Final answer
    x = 483,473.10

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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.