Home / 1,328,557.80-1,992,836.70-921,119.70

Finding the Fourth Proportional to 1,328,557.80, 1,992,836.70 and 921,119.70

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Solution

The fourth proportional to 1,328,557.80, 1,992,836.70 and 921,119.70 is: 1,381,679.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,557.80 : 1,992,836.70 = 921,119.70 : x
  2. Step 2: Convert to fraction form
    1,328,557.80/1,992,836.70 = 921,119.70/x
  3. Step 3: Cross multiply
    1,328,557.80x = 1,992,836.70 × 921,119.70
  4. Step 4: Simplify right side
    1,328,557.80x = 1,835,641,143,252.99
  5. Step 5: Solve for x
    x = 1,835,641,143,252.99/1,328,557.80
  6. Step 6: Final answer
    x = 1,381,679.55

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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.