Home / 1,389,514.74-1,918,439.55-1,068,900.54

Finding the Fourth Proportional to 1,389,514.74, 1,918,439.55 and 1,068,900.54

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Solution

The fourth proportional to 1,389,514.74, 1,918,439.55 and 1,068,900.54 is: 1,475,782.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,514.74 : 1,918,439.55 = 1,068,900.54 : x
  2. Step 2: Convert to fraction form
    1,389,514.74/1,918,439.55 = 1,068,900.54/x
  3. Step 3: Cross multiply
    1,389,514.74x = 1,918,439.55 × 1,068,900.54
  4. Step 4: Simplify right side
    1,389,514.74x = 2,050,621,070,952.36
  5. Step 5: Solve for x
    x = 2,050,621,070,952.36/1,389,514.74
  6. Step 6: Final answer
    x = 1,475,782.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.