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Finding the Fourth Proportional to 438,877.10, 658,315.65 and 404,662.70

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Solution

The fourth proportional to 438,877.10, 658,315.65 and 404,662.70 is: 606,994.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,877.10 : 658,315.65 = 404,662.70 : x
  2. Step 2: Convert to fraction form
    438,877.10/658,315.65 = 404,662.70/x
  3. Step 3: Cross multiply
    438,877.10x = 658,315.65 × 404,662.70
  4. Step 4: Simplify right side
    438,877.10x = 266,395,788,381.26
  5. Step 5: Solve for x
    x = 266,395,788,381.26/438,877.10
  6. Step 6: Final answer
    x = 606,994.05

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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.