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Finding the Fourth Proportional to 651,144, 981,152.96 and 535,408

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Solution

The fourth proportional to 651,144, 981,152.96 and 535,408 is: 806,760.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,144 : 981,152.96 = 535,408 : x
  2. Step 2: Convert to fraction form
    651,144/981,152.96 = 535,408/x
  3. Step 3: Cross multiply
    651,144x = 981,152.96 × 535,408
  4. Step 4: Simplify right side
    651,144x = 525,317,144,007.68
  5. Step 5: Solve for x
    x = 525,317,144,007.68/651,144
  6. Step 6: Final answer
    x = 806,760.32

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.