Home / 686,301.18-1,029,587.88-212,966.34

Finding the Fourth Proportional to 686,301.18, 1,029,587.88 and 212,966.34

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Solution

The fourth proportional to 686,301.18, 1,029,587.88 and 212,966.34 is: 319,491.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,301.18 : 1,029,587.88 = 212,966.34 : x
  2. Step 2: Convert to fraction form
    686,301.18/1,029,587.88 = 212,966.34/x
  3. Step 3: Cross multiply
    686,301.18x = 1,029,587.88 × 212,966.34
  4. Step 4: Simplify right side
    686,301.18x = 219,267,562,511.96
  5. Step 5: Solve for x
    x = 219,267,562,511.96/686,301.18
  6. Step 6: Final answer
    x = 319,491.75

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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.