Home / 1,390,867.80-2,086,604.10-792,115.80

Finding the Fourth Proportional to 1,390,867.80, 2,086,604.10 and 792,115.80

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Solution

The fourth proportional to 1,390,867.80, 2,086,604.10 and 792,115.80 is: 1,188,345.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,867.80 : 2,086,604.10 = 792,115.80 : x
  2. Step 2: Convert to fraction form
    1,390,867.80/2,086,604.10 = 792,115.80/x
  3. Step 3: Cross multiply
    1,390,867.80x = 2,086,604.10 × 792,115.80
  4. Step 4: Simplify right side
    1,390,867.80x = 1,652,832,075,954.78
  5. Step 5: Solve for x
    x = 1,652,832,075,954.78/1,390,867.80
  6. Step 6: Final answer
    x = 1,188,345.92

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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.