Home / 1,011,447.83-1,394,495.64-721,390.07

Finding the Fourth Proportional to 1,011,447.83, 1,394,495.64 and 721,390.07

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Solution

The fourth proportional to 1,011,447.83, 1,394,495.64 and 721,390.07 is: 994,589.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,011,447.83 : 1,394,495.64 = 721,390.07 : x
  2. Step 2: Convert to fraction form
    1,011,447.83/1,394,495.64 = 721,390.07/x
  3. Step 3: Cross multiply
    1,011,447.83x = 1,394,495.64 × 721,390.07
  4. Step 4: Simplify right side
    1,011,447.83x = 1,005,975,300,381.82
  5. Step 5: Solve for x
    x = 1,005,975,300,381.82/1,011,447.83
  6. Step 6: Final answer
    x = 994,589.41

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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.