Home / 640,981.16-961,116.92-262,167.85

Finding the Fourth Proportional to 640,981.16, 961,116.92 and 262,167.85

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Solution

The fourth proportional to 640,981.16, 961,116.92 and 262,167.85 is: 393,106.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,981.16 : 961,116.92 = 262,167.85 : x
  2. Step 2: Convert to fraction form
    640,981.16/961,116.92 = 262,167.85/x
  3. Step 3: Cross multiply
    640,981.16x = 961,116.92 × 262,167.85
  4. Step 4: Simplify right side
    640,981.16x = 251,973,956,515.02
  5. Step 5: Solve for x
    x = 251,973,956,515.02/640,981.16
  6. Step 6: Final answer
    x = 393,106.65

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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.