Home / 823,964.90-1,236,617.79-424,719.84

Finding the Fourth Proportional to 823,964.90, 1,236,617.79 and 424,719.84

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Solution

The fourth proportional to 823,964.90, 1,236,617.79 and 424,719.84 is: 637,425.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,964.90 : 1,236,617.79 = 424,719.84 : x
  2. Step 2: Convert to fraction form
    823,964.90/1,236,617.79 = 424,719.84/x
  3. Step 3: Cross multiply
    823,964.90x = 1,236,617.79 × 424,719.84
  4. Step 4: Simplify right side
    823,964.90x = 525,216,109,909.95
  5. Step 5: Solve for x
    x = 525,216,109,909.95/823,964.90
  6. Step 6: Final answer
    x = 637,425.35

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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.