Home / 765,451.38-1,148,435.35-338,928.98

Finding the Fourth Proportional to 765,451.38, 1,148,435.35 and 338,928.98

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Solution

The fourth proportional to 765,451.38, 1,148,435.35 and 338,928.98 is: 508,507.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,451.38 : 1,148,435.35 = 338,928.98 : x
  2. Step 2: Convert to fraction form
    765,451.38/1,148,435.35 = 338,928.98/x
  3. Step 3: Cross multiply
    765,451.38x = 1,148,435.35 × 338,928.98
  4. Step 4: Simplify right side
    765,451.38x = 389,238,021,771.44
  5. Step 5: Solve for x
    x = 389,238,021,771.44/765,451.38
  6. Step 6: Final answer
    x = 508,507.83

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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.