Home / 1,390,919.28-2,086,378.80-759,488.64

Finding the Fourth Proportional to 1,390,919.28, 2,086,378.80 and 759,488.64

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Solution

The fourth proportional to 1,390,919.28, 2,086,378.80 and 759,488.64 is: 1,139,232.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,919.28 : 2,086,378.80 = 759,488.64 : x
  2. Step 2: Convert to fraction form
    1,390,919.28/2,086,378.80 = 759,488.64/x
  3. Step 3: Cross multiply
    1,390,919.28x = 2,086,378.80 × 759,488.64
  4. Step 4: Simplify right side
    1,390,919.28x = 1,584,580,997,336.83
  5. Step 5: Solve for x
    x = 1,584,580,997,336.83/1,390,919.28
  6. Step 6: Final answer
    x = 1,139,232.89

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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.