Home / 686,032.02-1,029,157.11-212,619.42

Finding the Fourth Proportional to 686,032.02, 1,029,157.11 and 212,619.42

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Solution

The fourth proportional to 686,032.02, 1,029,157.11 and 212,619.42 is: 318,962.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,032.02 : 1,029,157.11 = 212,619.42 : x
  2. Step 2: Convert to fraction form
    686,032.02/1,029,157.11 = 212,619.42/x
  3. Step 3: Cross multiply
    686,032.02x = 1,029,157.11 × 212,619.42
  4. Step 4: Simplify right side
    686,032.02x = 218,818,787,817.08
  5. Step 5: Solve for x
    x = 218,818,787,817.08/686,032.02
  6. Step 6: Final answer
    x = 318,962.94

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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.