Home / 1,207,606.20-1,809,335.70-638,143.80

Finding the Fourth Proportional to 1,207,606.20, 1,809,335.70 and 638,143.80

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Solution

The fourth proportional to 1,207,606.20, 1,809,335.70 and 638,143.80 is: 956,119.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,606.20 : 1,809,335.70 = 638,143.80 : x
  2. Step 2: Convert to fraction form
    1,207,606.20/1,809,335.70 = 638,143.80/x
  3. Step 3: Cross multiply
    1,207,606.20x = 1,809,335.70 × 638,143.80
  4. Step 4: Simplify right side
    1,207,606.20x = 1,154,616,359,073.66
  5. Step 5: Solve for x
    x = 1,154,616,359,073.66/1,207,606.20
  6. Step 6: Final answer
    x = 956,119.93

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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.