Home / 811,830.02-1,217,750.22-212,786

Finding the Fourth Proportional to 811,830.02, 1,217,750.22 and 212,786

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Solution

The fourth proportional to 811,830.02, 1,217,750.22 and 212,786 is: 319,180.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,830.02 : 1,217,750.22 = 212,786 : x
  2. Step 2: Convert to fraction form
    811,830.02/1,217,750.22 = 212,786/x
  3. Step 3: Cross multiply
    811,830.02x = 1,217,750.22 × 212,786
  4. Step 4: Simplify right side
    811,830.02x = 259,120,198,312.92
  5. Step 5: Solve for x
    x = 259,120,198,312.92/811,830.02
  6. Step 6: Final answer
    x = 319,180.36

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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.