Home / 1,383,963.77-1,909,871.20-772,116.65

Finding the Fourth Proportional to 1,383,963.77, 1,909,871.20 and 772,116.65

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Solution

The fourth proportional to 1,383,963.77, 1,909,871.20 and 772,116.65 is: 1,065,521.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,963.77 : 1,909,871.20 = 772,116.65 : x
  2. Step 2: Convert to fraction form
    1,383,963.77/1,909,871.20 = 772,116.65/x
  3. Step 3: Cross multiply
    1,383,963.77x = 1,909,871.20 × 772,116.65
  4. Step 4: Simplify right side
    1,383,963.77x = 1,474,643,360,024.73
  5. Step 5: Solve for x
    x = 1,474,643,360,024.73/1,383,963.77
  6. Step 6: Final answer
    x = 1,065,521.65

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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.