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Finding the Fourth Proportional to 640,867.14, 961,878.51 and 341,596.98

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Solution

The fourth proportional to 640,867.14, 961,878.51 and 341,596.98 is: 512,703.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,867.14 : 961,878.51 = 341,596.98 : x
  2. Step 2: Convert to fraction form
    640,867.14/961,878.51 = 341,596.98/x
  3. Step 3: Cross multiply
    640,867.14x = 961,878.51 × 341,596.98
  4. Step 4: Simplify right side
    640,867.14x = 328,574,794,142.90
  5. Step 5: Solve for x
    x = 328,574,794,142.90/640,867.14
  6. Step 6: Final answer
    x = 512,703.45

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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.