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Finding the Fourth Proportional to 651,121, 981,118.23 and 535,385

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Solution

The fourth proportional to 651,121, 981,118.23 and 535,385 is: 806,725.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,121 : 981,118.23 = 535,385 : x
  2. Step 2: Convert to fraction form
    651,121/981,118.23 = 535,385/x
  3. Step 3: Cross multiply
    651,121x = 981,118.23 × 535,385
  4. Step 4: Simplify right side
    651,121x = 525,275,983,568.55
  5. Step 5: Solve for x
    x = 525,275,983,568.55/651,121
  6. Step 6: Final answer
    x = 806,725.61

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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.