Home / 640,980.16-961,115.42-262,166.85

Finding the Fourth Proportional to 640,980.16, 961,115.42 and 262,166.85

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Solution

The fourth proportional to 640,980.16, 961,115.42 and 262,166.85 is: 393,105.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,980.16 : 961,115.42 = 262,166.85 : x
  2. Step 2: Convert to fraction form
    640,980.16/961,115.42 = 262,166.85/x
  3. Step 3: Cross multiply
    640,980.16x = 961,115.42 × 262,166.85
  4. Step 4: Simplify right side
    640,980.16x = 251,972,602,803.24
  5. Step 5: Solve for x
    x = 251,972,602,803.24/640,980.16
  6. Step 6: Final answer
    x = 393,105.15

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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.