Home / 686,251.87-1,029,444.32-212,810.11

Finding the Fourth Proportional to 686,251.87, 1,029,444.32 and 212,810.11

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Solution

The fourth proportional to 686,251.87, 1,029,444.32 and 212,810.11 is: 319,235.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,251.87 : 1,029,444.32 = 212,810.11 : x
  2. Step 2: Convert to fraction form
    686,251.87/1,029,444.32 = 212,810.11/x
  3. Step 3: Cross multiply
    686,251.87x = 1,029,444.32 × 212,810.11
  4. Step 4: Simplify right side
    686,251.87x = 219,076,156,936.49
  5. Step 5: Solve for x
    x = 219,076,156,936.49/686,251.87
  6. Step 6: Final answer
    x = 319,235.79

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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.