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Finding the Fourth Proportional to 655,506.40, 983,565.76 and 339,791.04

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Solution

The fourth proportional to 655,506.40, 983,565.76 and 339,791.04 is: 509,845.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,506.40 : 983,565.76 = 339,791.04 : x
  2. Step 2: Convert to fraction form
    655,506.40/983,565.76 = 339,791.04/x
  3. Step 3: Cross multiply
    655,506.40x = 983,565.76 × 339,791.04
  4. Step 4: Simplify right side
    655,506.40x = 334,206,832,498.79
  5. Step 5: Solve for x
    x = 334,206,832,498.79/655,506.40
  6. Step 6: Final answer
    x = 509,845.26

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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.