Home / 1,296,889.20-1,945,332-720,878.64

Finding the Fourth Proportional to 1,296,889.20, 1,945,332 and 720,878.64

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Solution

The fourth proportional to 1,296,889.20, 1,945,332 and 720,878.64 is: 1,081,316.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,889.20 : 1,945,332 = 720,878.64 : x
  2. Step 2: Convert to fraction form
    1,296,889.20/1,945,332 = 720,878.64/x
  3. Step 3: Cross multiply
    1,296,889.20x = 1,945,332 × 720,878.64
  4. Step 4: Simplify right side
    1,296,889.20x = 1,402,348,286,508.48
  5. Step 5: Solve for x
    x = 1,402,348,286,508.48/1,296,889.20
  6. Step 6: Final answer
    x = 1,081,316.96

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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.