Home / 1,289,886.30-1,934,834.13-391,335.66

Finding the Fourth Proportional to 1,289,886.30, 1,934,834.13 and 391,335.66

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Solution

The fourth proportional to 1,289,886.30, 1,934,834.13 and 391,335.66 is: 587,004.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,886.30 : 1,934,834.13 = 391,335.66 : x
  2. Step 2: Convert to fraction form
    1,289,886.30/1,934,834.13 = 391,335.66/x
  3. Step 3: Cross multiply
    1,289,886.30x = 1,934,834.13 × 391,335.66
  4. Step 4: Simplify right side
    1,289,886.30x = 757,169,591,254.08
  5. Step 5: Solve for x
    x = 757,169,591,254.08/1,289,886.30
  6. Step 6: Final answer
    x = 587,004.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.