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Finding the Fourth Proportional to 1,786,702.60, 2,679,132.30 and 664,193.80

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Solution

The fourth proportional to 1,786,702.60, 2,679,132.30 and 664,193.80 is: 995,948.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786,702.60 : 2,679,132.30 = 664,193.80 : x
  2. Step 2: Convert to fraction form
    1,786,702.60/2,679,132.30 = 664,193.80/x
  3. Step 3: Cross multiply
    1,786,702.60x = 2,679,132.30 × 664,193.80
  4. Step 4: Simplify right side
    1,786,702.60x = 1,779,463,063,039.74
  5. Step 5: Solve for x
    x = 1,779,463,063,039.74/1,786,702.60
  6. Step 6: Final answer
    x = 995,948.10

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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.