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Finding the Fourth Proportional to 438,886.10, 658,329.15 and 404,671.70

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Solution

The fourth proportional to 438,886.10, 658,329.15 and 404,671.70 is: 607,007.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,886.10 : 658,329.15 = 404,671.70 : x
  2. Step 2: Convert to fraction form
    438,886.10/658,329.15 = 404,671.70/x
  3. Step 3: Cross multiply
    438,886.10x = 658,329.15 × 404,671.70
  4. Step 4: Simplify right side
    438,886.10x = 266,407,176,290.06
  5. Step 5: Solve for x
    x = 266,407,176,290.06/438,886.10
  6. Step 6: Final answer
    x = 607,007.55

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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.