Home / 815,785.63-1,217,690.28-755,666.37

Finding the Fourth Proportional to 815,785.63, 1,217,690.28 and 755,666.37

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Solution

The fourth proportional to 815,785.63, 1,217,690.28 and 755,666.37 is: 1,127,952.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,785.63 : 1,217,690.28 = 755,666.37 : x
  2. Step 2: Convert to fraction form
    815,785.63/1,217,690.28 = 755,666.37/x
  3. Step 3: Cross multiply
    815,785.63x = 1,217,690.28 × 755,666.37
  4. Step 4: Simplify right side
    815,785.63x = 920,167,589,316.02
  5. Step 5: Solve for x
    x = 920,167,589,316.02/815,785.63
  6. Step 6: Final answer
    x = 1,127,952.68

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.