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Finding the Fourth Proportional to 563,633.40, 777,843.90 and 308,995.32

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Solution

The fourth proportional to 563,633.40, 777,843.90 and 308,995.32 is: 426,429.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,633.40 : 777,843.90 = 308,995.32 : x
  2. Step 2: Convert to fraction form
    563,633.40/777,843.90 = 308,995.32/x
  3. Step 3: Cross multiply
    563,633.40x = 777,843.90 × 308,995.32
  4. Step 4: Simplify right side
    563,633.40x = 240,350,124,790.55
  5. Step 5: Solve for x
    x = 240,350,124,790.55/563,633.40
  6. Step 6: Final answer
    x = 426,429.88

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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.