Home / 765,434.64-1,148,105.88-338,845.56

Finding the Fourth Proportional to 765,434.64, 1,148,105.88 and 338,845.56

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Solution

The fourth proportional to 765,434.64, 1,148,105.88 and 338,845.56 is: 508,247.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,434.64 : 1,148,105.88 = 338,845.56 : x
  2. Step 2: Convert to fraction form
    765,434.64/1,148,105.88 = 338,845.56/x
  3. Step 3: Cross multiply
    765,434.64x = 1,148,105.88 × 338,845.56
  4. Step 4: Simplify right side
    765,434.64x = 389,030,579,847.89
  5. Step 5: Solve for x
    x = 389,030,579,847.89/765,434.64
  6. Step 6: Final answer
    x = 508,247.94

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Double scale
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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.