Home / 2,142,938.80-3,214,408.20-646,836.40

Finding the Fourth Proportional to 2,142,938.80, 3,214,408.20 and 646,836.40

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Solution

The fourth proportional to 2,142,938.80, 3,214,408.20 and 646,836.40 is: 970,254.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142,938.80 : 3,214,408.20 = 646,836.40 : x
  2. Step 2: Convert to fraction form
    2,142,938.80/3,214,408.20 = 646,836.40/x
  3. Step 3: Cross multiply
    2,142,938.80x = 3,214,408.20 × 646,836.40
  4. Step 4: Simplify right side
    2,142,938.80x = 2,079,196,228,218.48
  5. Step 5: Solve for x
    x = 2,079,196,228,218.48/2,142,938.80
  6. Step 6: Final answer
    x = 970,254.60

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Similar ratio
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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.