Home / 1,276,006.40-1,914,009.60-644,838.20

Finding the Fourth Proportional to 1,276,006.40, 1,914,009.60 and 644,838.20

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Solution

The fourth proportional to 1,276,006.40, 1,914,009.60 and 644,838.20 is: 967,257.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,006.40 : 1,914,009.60 = 644,838.20 : x
  2. Step 2: Convert to fraction form
    1,276,006.40/1,914,009.60 = 644,838.20/x
  3. Step 3: Cross multiply
    1,276,006.40x = 1,914,009.60 × 644,838.20
  4. Step 4: Simplify right side
    1,276,006.40x = 1,234,226,505,246.72
  5. Step 5: Solve for x
    x = 1,234,226,505,246.72/1,276,006.40
  6. Step 6: Final answer
    x = 967,257.30

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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.