Home / 1,391,703.40-2,087,555.10-918,922.60

Finding the Fourth Proportional to 1,391,703.40, 2,087,555.10 and 918,922.60

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Solution

The fourth proportional to 1,391,703.40, 2,087,555.10 and 918,922.60 is: 1,378,383.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,703.40 : 2,087,555.10 = 918,922.60 : x
  2. Step 2: Convert to fraction form
    1,391,703.40/2,087,555.10 = 918,922.60/x
  3. Step 3: Cross multiply
    1,391,703.40x = 2,087,555.10 × 918,922.60
  4. Step 4: Simplify right side
    1,391,703.40x = 1,918,301,560,135.26
  5. Step 5: Solve for x
    x = 1,918,301,560,135.26/1,391,703.40
  6. Step 6: Final answer
    x = 1,378,383.90

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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.