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Finding the Fourth Proportional to 886,671.90, 1,330,335.90 and 287,652.60

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Solution

The fourth proportional to 886,671.90, 1,330,335.90 and 287,652.60 is: 431,585.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,671.90 : 1,330,335.90 = 287,652.60 : x
  2. Step 2: Convert to fraction form
    886,671.90/1,330,335.90 = 287,652.60/x
  3. Step 3: Cross multiply
    886,671.90x = 1,330,335.90 × 287,652.60
  4. Step 4: Simplify right side
    886,671.90x = 382,674,580,508.34
  5. Step 5: Solve for x
    x = 382,674,580,508.34/886,671.90
  6. Step 6: Final answer
    x = 431,585.33

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1.5x scale

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.