Home / 686,077.92-1,029,216.48-212,801.36

Finding the Fourth Proportional to 686,077.92, 1,029,216.48 and 212,801.36

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Solution

The fourth proportional to 686,077.92, 1,029,216.48 and 212,801.36 is: 319,232.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,077.92 : 1,029,216.48 = 212,801.36 : x
  2. Step 2: Convert to fraction form
    686,077.92/1,029,216.48 = 212,801.36/x
  3. Step 3: Cross multiply
    686,077.92x = 1,029,216.48 × 212,801.36
  4. Step 4: Simplify right side
    686,077.92x = 219,018,666,678.41
  5. Step 5: Solve for x
    x = 219,018,666,678.41/686,077.92
  6. Step 6: Final answer
    x = 319,232.93

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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.