Home / 886,439.36-1,329,869.54-287,400.92

Finding the Fourth Proportional to 886,439.36, 1,329,869.54 and 287,400.92

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Solution

The fourth proportional to 886,439.36, 1,329,869.54 and 287,400.92 is: 431,169.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,439.36 : 1,329,869.54 = 287,400.92 : x
  2. Step 2: Convert to fraction form
    886,439.36/1,329,869.54 = 287,400.92/x
  3. Step 3: Cross multiply
    886,439.36x = 1,329,869.54 × 287,400.92
  4. Step 4: Simplify right side
    886,439.36x = 382,205,721,189.62
  5. Step 5: Solve for x
    x = 382,205,721,189.62/886,439.36
  6. Step 6: Final answer
    x = 431,169.62

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1.5x scale

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.