Home / 1,112,616.32-1,668,994.92-429,828.80

Finding the Fourth Proportional to 1,112,616.32, 1,668,994.92 and 429,828.80

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Solution

The fourth proportional to 1,112,616.32, 1,668,994.92 and 429,828.80 is: 644,770.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112,616.32 : 1,668,994.92 = 429,828.80 : x
  2. Step 2: Convert to fraction form
    1,112,616.32/1,668,994.92 = 429,828.80/x
  3. Step 3: Cross multiply
    1,112,616.32x = 1,668,994.92 × 429,828.80
  4. Step 4: Simplify right side
    1,112,616.32x = 717,382,083,669.70
  5. Step 5: Solve for x
    x = 717,382,083,669.70/1,112,616.32
  6. Step 6: Final answer
    x = 644,770.41

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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.