Home / 1,287,178-1,776,390.51-743,336.62

Finding the Fourth Proportional to 1,287,178, 1,776,390.51 and 743,336.62

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Solution

The fourth proportional to 1,287,178, 1,776,390.51 and 743,336.62 is: 1,025,853.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,178 : 1,776,390.51 = 743,336.62 : x
  2. Step 2: Convert to fraction form
    1,287,178/1,776,390.51 = 743,336.62/x
  3. Step 3: Cross multiply
    1,287,178x = 1,776,390.51 × 743,336.62
  4. Step 4: Simplify right side
    1,287,178x = 1,320,456,117,503.48
  5. Step 5: Solve for x
    x = 1,320,456,117,503.48/1,287,178
  6. Step 6: Final answer
    x = 1,025,853.55

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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.