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Finding the Fourth Proportional to 699,792.72, 965,845.80 and 438,269.28

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Solution

The fourth proportional to 699,792.72, 965,845.80 and 438,269.28 is: 604,894.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,792.72 : 965,845.80 = 438,269.28 : x
  2. Step 2: Convert to fraction form
    699,792.72/965,845.80 = 438,269.28/x
  3. Step 3: Cross multiply
    699,792.72x = 965,845.80 × 438,269.28
  4. Step 4: Simplify right side
    699,792.72x = 423,300,543,357.02
  5. Step 5: Solve for x
    x = 423,300,543,357.02/699,792.72
  6. Step 6: Final answer
    x = 604,894.18

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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.