Home / 1,288,120.83-1,777,537.33-715,124.13

Finding the Fourth Proportional to 1,288,120.83, 1,777,537.33 and 715,124.13

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Solution

The fourth proportional to 1,288,120.83, 1,777,537.33 and 715,124.13 is: 986,832.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,120.83 : 1,777,537.33 = 715,124.13 : x
  2. Step 2: Convert to fraction form
    1,288,120.83/1,777,537.33 = 715,124.13/x
  3. Step 3: Cross multiply
    1,288,120.83x = 1,777,537.33 × 715,124.13
  4. Step 4: Simplify right side
    1,288,120.83x = 1,271,159,836,658.77
  5. Step 5: Solve for x
    x = 1,271,159,836,658.77/1,288,120.83
  6. Step 6: Final answer
    x = 986,832.76

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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.