Home / 691,982.64-1,038,126.33-212,276.52

Finding the Fourth Proportional to 691,982.64, 1,038,126.33 and 212,276.52

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Solution

The fourth proportional to 691,982.64, 1,038,126.33 and 212,276.52 is: 318,461.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,982.64 : 1,038,126.33 = 212,276.52 : x
  2. Step 2: Convert to fraction form
    691,982.64/1,038,126.33 = 212,276.52/x
  3. Step 3: Cross multiply
    691,982.64x = 1,038,126.33 × 212,276.52
  4. Step 4: Simplify right side
    691,982.64x = 220,369,844,652.77
  5. Step 5: Solve for x
    x = 220,369,844,652.77/691,982.64
  6. Step 6: Final answer
    x = 318,461.52

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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.