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Finding the Fourth Proportional to 554,728.80, 832,381.20 and 259,240.80

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Solution

The fourth proportional to 554,728.80, 832,381.20 and 259,240.80 is: 388,995.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,728.80 : 832,381.20 = 259,240.80 : x
  2. Step 2: Convert to fraction form
    554,728.80/832,381.20 = 259,240.80/x
  3. Step 3: Cross multiply
    554,728.80x = 832,381.20 × 259,240.80
  4. Step 4: Simplify right side
    554,728.80x = 215,787,168,192.96
  5. Step 5: Solve for x
    x = 215,787,168,192.96/554,728.80
  6. Step 6: Final answer
    x = 388,995.79

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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.