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Finding the Fourth Proportional to 567,611.91, 783,301.25 and 312,963.30

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Solution

The fourth proportional to 567,611.91, 783,301.25 and 312,963.30 is: 431,887.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,611.91 : 783,301.25 = 312,963.30 : x
  2. Step 2: Convert to fraction form
    567,611.91/783,301.25 = 312,963.30/x
  3. Step 3: Cross multiply
    567,611.91x = 783,301.25 × 312,963.30
  4. Step 4: Simplify right side
    567,611.91x = 245,144,544,876.53
  5. Step 5: Solve for x
    x = 245,144,544,876.53/567,611.91
  6. Step 6: Final answer
    x = 431,887.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.