Home / 859,910.49-1,290,384.15-299,338.65

Finding the Fourth Proportional to 859,910.49, 1,290,384.15 and 299,338.65

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Solution

The fourth proportional to 859,910.49, 1,290,384.15 and 299,338.65 is: 449,188.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,910.49 : 1,290,384.15 = 299,338.65 : x
  2. Step 2: Convert to fraction form
    859,910.49/1,290,384.15 = 299,338.65/x
  3. Step 3: Cross multiply
    859,910.49x = 1,290,384.15 × 299,338.65
  4. Step 4: Simplify right side
    859,910.49x = 386,261,849,442.40
  5. Step 5: Solve for x
    x = 386,261,849,442.40/859,910.49
  6. Step 6: Final answer
    x = 449,188.44

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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.