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Finding the Fourth Proportional to 424,808.88, 585,928.68 and 288,604.98

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Solution

The fourth proportional to 424,808.88, 585,928.68 and 288,604.98 is: 398,065.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,808.88 : 585,928.68 = 288,604.98 : x
  2. Step 2: Convert to fraction form
    424,808.88/585,928.68 = 288,604.98/x
  3. Step 3: Cross multiply
    424,808.88x = 585,928.68 × 288,604.98
  4. Step 4: Simplify right side
    424,808.88x = 169,101,934,972.83
  5. Step 5: Solve for x
    x = 169,101,934,972.83/424,808.88
  6. Step 6: Final answer
    x = 398,065.91

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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.