Home / 811,682.47-1,217,577.17-212,658.31

Finding the Fourth Proportional to 811,682.47, 1,217,577.17 and 212,658.31

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Solution

The fourth proportional to 811,682.47, 1,217,577.17 and 212,658.31 is: 319,001.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,682.47 : 1,217,577.17 = 212,658.31 : x
  2. Step 2: Convert to fraction form
    811,682.47/1,217,577.17 = 212,658.31/x
  3. Step 3: Cross multiply
    811,682.47x = 1,217,577.17 × 212,658.31
  4. Step 4: Simplify right side
    811,682.47x = 258,927,903,266.78
  5. Step 5: Solve for x
    x = 258,927,903,266.78/811,682.47
  6. Step 6: Final answer
    x = 319,001.47

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1.5x scale

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.