Home / 2,138,666.40-3,207,999.60-642,758.40

Finding the Fourth Proportional to 2,138,666.40, 3,207,999.60 and 642,758.40

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Solution

The fourth proportional to 2,138,666.40, 3,207,999.60 and 642,758.40 is: 964,137.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138,666.40 : 3,207,999.60 = 642,758.40 : x
  2. Step 2: Convert to fraction form
    2,138,666.40/3,207,999.60 = 642,758.40/x
  3. Step 3: Cross multiply
    2,138,666.40x = 3,207,999.60 × 642,758.40
  4. Step 4: Simplify right side
    2,138,666.40x = 2,061,968,690,096.64
  5. Step 5: Solve for x
    x = 2,061,968,690,096.64/2,138,666.40
  6. Step 6: Final answer
    x = 964,137.60

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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.