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Finding the Fourth Proportional to 554,381.80, 830,155.74 and 304,789.48

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Solution

The fourth proportional to 554,381.80, 830,155.74 and 304,789.48 is: 456,405.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,381.80 : 830,155.74 = 304,789.48 : x
  2. Step 2: Convert to fraction form
    554,381.80/830,155.74 = 304,789.48/x
  3. Step 3: Cross multiply
    554,381.80x = 830,155.74 × 304,789.48
  4. Step 4: Simplify right side
    554,381.80x = 253,022,736,313.62
  5. Step 5: Solve for x
    x = 253,022,736,313.62/554,381.80
  6. Step 6: Final answer
    x = 456,405.20

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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.