Home / 1,138,703.80-1,706,889.30-665,145.40

Finding the Fourth Proportional to 1,138,703.80, 1,706,889.30 and 665,145.40

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Solution

The fourth proportional to 1,138,703.80, 1,706,889.30 and 665,145.40 is: 997,036.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,703.80 : 1,706,889.30 = 665,145.40 : x
  2. Step 2: Convert to fraction form
    1,138,703.80/1,706,889.30 = 665,145.40/x
  3. Step 3: Cross multiply
    1,138,703.80x = 1,706,889.30 × 665,145.40
  4. Step 4: Simplify right side
    1,138,703.80x = 1,135,329,566,204.22
  5. Step 5: Solve for x
    x = 1,135,329,566,204.22/1,138,703.80
  6. Step 6: Final answer
    x = 997,036.78

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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.