Home / 1,620,079.10-2,234,034.58-1,391,393.60

Finding the Fourth Proportional to 1,620,079.10, 2,234,034.58 and 1,391,393.60

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Solution

The fourth proportional to 1,620,079.10, 2,234,034.58 and 1,391,393.60 is: 1,918,684.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620,079.10 : 2,234,034.58 = 1,391,393.60 : x
  2. Step 2: Convert to fraction form
    1,620,079.10/2,234,034.58 = 1,391,393.60/x
  3. Step 3: Cross multiply
    1,620,079.10x = 2,234,034.58 × 1,391,393.60
  4. Step 4: Simplify right side
    1,620,079.10x = 3,108,421,416,790.69
  5. Step 5: Solve for x
    x = 3,108,421,416,790.69/1,620,079.10
  6. Step 6: Final answer
    x = 1,918,684.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.