Home / 1,302,112.79-1,796,915.40-721,373.66

Finding the Fourth Proportional to 1,302,112.79, 1,796,915.40 and 721,373.66

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Solution

The fourth proportional to 1,302,112.79, 1,796,915.40 and 721,373.66 is: 995,495.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302,112.79 : 1,796,915.40 = 721,373.66 : x
  2. Step 2: Convert to fraction form
    1,302,112.79/1,796,915.40 = 721,373.66/x
  3. Step 3: Cross multiply
    1,302,112.79x = 1,796,915.40 × 721,373.66
  4. Step 4: Simplify right side
    1,302,112.79x = 1,296,247,438,808.36
  5. Step 5: Solve for x
    x = 1,296,247,438,808.36/1,302,112.79
  6. Step 6: Final answer
    x = 995,495.51

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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.