Home / 641,119.72-961,981.98-286,102.12

Finding the Fourth Proportional to 641,119.72, 961,981.98 and 286,102.12

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Solution

The fourth proportional to 641,119.72, 961,981.98 and 286,102.12 is: 429,288.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,119.72 : 961,981.98 = 286,102.12 : x
  2. Step 2: Convert to fraction form
    641,119.72/961,981.98 = 286,102.12/x
  3. Step 3: Cross multiply
    641,119.72x = 961,981.98 × 286,102.12
  4. Step 4: Simplify right side
    641,119.72x = 275,225,083,879.80
  5. Step 5: Solve for x
    x = 275,225,083,879.80/641,119.72
  6. Step 6: Final answer
    x = 429,288.13

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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.