Home / 1,189,637.88-1,641,703.71-645,773.91

Finding the Fourth Proportional to 1,189,637.88, 1,641,703.71 and 645,773.91

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Solution

The fourth proportional to 1,189,637.88, 1,641,703.71 and 645,773.91 is: 891,169.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,637.88 : 1,641,703.71 = 645,773.91 : x
  2. Step 2: Convert to fraction form
    1,189,637.88/1,641,703.71 = 645,773.91/x
  3. Step 3: Cross multiply
    1,189,637.88x = 1,641,703.71 × 645,773.91
  4. Step 4: Simplify right side
    1,189,637.88x = 1,060,169,423,868.21
  5. Step 5: Solve for x
    x = 1,060,169,423,868.21/1,189,637.88
  6. Step 6: Final answer
    x = 891,169.86

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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.