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Finding the Fourth Proportional to 1,148,472.07, 1,584,982.89 and 665,045.64

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Solution

The fourth proportional to 1,148,472.07, 1,584,982.89 and 665,045.64 is: 917,815.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148,472.07 : 1,584,982.89 = 665,045.64 : x
  2. Step 2: Convert to fraction form
    1,148,472.07/1,584,982.89 = 665,045.64/x
  3. Step 3: Cross multiply
    1,148,472.07x = 1,584,982.89 × 665,045.64
  4. Step 4: Simplify right side
    1,148,472.07x = 1,054,085,960,469.10
  5. Step 5: Solve for x
    x = 1,054,085,960,469.10/1,148,472.07
  6. Step 6: Final answer
    x = 917,815.93

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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.