Home / 1,302,131.20-1,796,899.20-721,330.40

Finding the Fourth Proportional to 1,302,131.20, 1,796,899.20 and 721,330.40

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Solution

The fourth proportional to 1,302,131.20, 1,796,899.20 and 721,330.40 is: 995,412.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302,131.20 : 1,796,899.20 = 721,330.40 : x
  2. Step 2: Convert to fraction form
    1,302,131.20/1,796,899.20 = 721,330.40/x
  3. Step 3: Cross multiply
    1,302,131.20x = 1,796,899.20 × 721,330.40
  4. Step 4: Simplify right side
    1,302,131.20x = 1,296,158,018,695.68
  5. Step 5: Solve for x
    x = 1,296,158,018,695.68/1,302,131.20
  6. Step 6: Final answer
    x = 995,412.77

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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.