Home / 1,170,072.20-1,755,108.30-638,631.20

Finding the Fourth Proportional to 1,170,072.20, 1,755,108.30 and 638,631.20

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Solution

The fourth proportional to 1,170,072.20, 1,755,108.30 and 638,631.20 is: 957,946.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,170,072.20 : 1,755,108.30 = 638,631.20 : x
  2. Step 2: Convert to fraction form
    1,170,072.20/1,755,108.30 = 638,631.20/x
  3. Step 3: Cross multiply
    1,170,072.20x = 1,755,108.30 × 638,631.20
  4. Step 4: Simplify right side
    1,170,072.20x = 1,120,866,919,758.96
  5. Step 5: Solve for x
    x = 1,120,866,919,758.96/1,170,072.20
  6. Step 6: Final answer
    x = 957,946.80

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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.