Home / 1,273,312.64-1,756,653.08-721,912.16

Finding the Fourth Proportional to 1,273,312.64, 1,756,653.08 and 721,912.16

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Solution

The fourth proportional to 1,273,312.64, 1,756,653.08 and 721,912.16 is: 995,944.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273,312.64 : 1,756,653.08 = 721,912.16 : x
  2. Step 2: Convert to fraction form
    1,273,312.64/1,756,653.08 = 721,912.16/x
  3. Step 3: Cross multiply
    1,273,312.64x = 1,756,653.08 × 721,912.16
  4. Step 4: Simplify right side
    1,273,312.64x = 1,268,149,220,135.52
  5. Step 5: Solve for x
    x = 1,268,149,220,135.52/1,273,312.64
  6. Step 6: Final answer
    x = 995,944.89

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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.