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Finding the Fourth Proportional to 475,803.72, 656,509.86 and 322,960.20

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Solution

The fourth proportional to 475,803.72, 656,509.86 and 322,960.20 is: 445,617.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,803.72 : 656,509.86 = 322,960.20 : x
  2. Step 2: Convert to fraction form
    475,803.72/656,509.86 = 322,960.20/x
  3. Step 3: Cross multiply
    475,803.72x = 656,509.86 × 322,960.20
  4. Step 4: Simplify right side
    475,803.72x = 212,026,555,687.57
  5. Step 5: Solve for x
    x = 212,026,555,687.57/475,803.72
  6. Step 6: Final answer
    x = 445,617.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.