Home / 815,486.77-1,223,272.28-208,280.76

Finding the Fourth Proportional to 815,486.77, 1,223,272.28 and 208,280.76

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Solution

The fourth proportional to 815,486.77, 1,223,272.28 and 208,280.76 is: 312,431.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,486.77 : 1,223,272.28 = 208,280.76 : x
  2. Step 2: Convert to fraction form
    815,486.77/1,223,272.28 = 208,280.76/x
  3. Step 3: Cross multiply
    815,486.77x = 1,223,272.28 × 208,280.76
  4. Step 4: Simplify right side
    815,486.77x = 254,784,080,165.33
  5. Step 5: Solve for x
    x = 254,784,080,165.33/815,486.77
  6. Step 6: Final answer
    x = 312,431.90

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1.5x scale

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.