Home / 1,287,732.72-1,777,068.12-714,779.76

Finding the Fourth Proportional to 1,287,732.72, 1,777,068.12 and 714,779.76

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Solution

The fourth proportional to 1,287,732.72, 1,777,068.12 and 714,779.76 is: 986,394.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,732.72 : 1,777,068.12 = 714,779.76 : x
  2. Step 2: Convert to fraction form
    1,287,732.72/1,777,068.12 = 714,779.76/x
  3. Step 3: Cross multiply
    1,287,732.72x = 1,777,068.12 × 714,779.76
  4. Step 4: Simplify right side
    1,287,732.72x = 1,270,212,324,317.25
  5. Step 5: Solve for x
    x = 1,270,212,324,317.25/1,287,732.72
  6. Step 6: Final answer
    x = 986,394.38

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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.