Home / 1,389,931.13-2,086,244.86-670,778.94

Finding the Fourth Proportional to 1,389,931.13, 2,086,244.86 and 670,778.94

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Solution

The fourth proportional to 1,389,931.13, 2,086,244.86 and 670,778.94 is: 1,006,819.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,931.13 : 2,086,244.86 = 670,778.94 : x
  2. Step 2: Convert to fraction form
    1,389,931.13/2,086,244.86 = 670,778.94/x
  3. Step 3: Cross multiply
    1,389,931.13x = 2,086,244.86 × 670,778.94
  4. Step 4: Simplify right side
    1,389,931.13x = 1,399,409,115,771.25
  5. Step 5: Solve for x
    x = 1,399,409,115,771.25/1,389,931.13
  6. Step 6: Final answer
    x = 1,006,819.03

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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.