Home / 1,207,605.20-1,809,334.20-638,142.80

Finding the Fourth Proportional to 1,207,605.20, 1,809,334.20 and 638,142.80

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Solution

The fourth proportional to 1,207,605.20, 1,809,334.20 and 638,142.80 is: 956,118.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,605.20 : 1,809,334.20 = 638,142.80 : x
  2. Step 2: Convert to fraction form
    1,207,605.20/1,809,334.20 = 638,142.80/x
  3. Step 3: Cross multiply
    1,207,605.20x = 1,809,334.20 × 638,142.80
  4. Step 4: Simplify right side
    1,207,605.20x = 1,154,613,592,523.76
  5. Step 5: Solve for x
    x = 1,154,613,592,523.76/1,207,605.20
  6. Step 6: Final answer
    x = 956,118.43

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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.