Home / 1,288,648.40-1,932,972.60-342,114.80

Finding the Fourth Proportional to 1,288,648.40, 1,932,972.60 and 342,114.80

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Solution

The fourth proportional to 1,288,648.40, 1,932,972.60 and 342,114.80 is: 513,172.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,648.40 : 1,932,972.60 = 342,114.80 : x
  2. Step 2: Convert to fraction form
    1,288,648.40/1,932,972.60 = 342,114.80/x
  3. Step 3: Cross multiply
    1,288,648.40x = 1,932,972.60 × 342,114.80
  4. Step 4: Simplify right side
    1,288,648.40x = 661,298,534,454.48
  5. Step 5: Solve for x
    x = 661,298,534,454.48/1,288,648.40
  6. Step 6: Final answer
    x = 513,172.20

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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.