Home / 495,136.23-683,290.05-280,317.75

Finding the Fourth Proportional to 495,136.23, 683,290.05 and 280,317.75

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Solution

The fourth proportional to 495,136.23, 683,290.05 and 280,317.75 is: 386,839.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,136.23 : 683,290.05 = 280,317.75 : x
  2. Step 2: Convert to fraction form
    495,136.23/683,290.05 = 280,317.75/x
  3. Step 3: Cross multiply
    495,136.23x = 683,290.05 × 280,317.75
  4. Step 4: Simplify right side
    495,136.23x = 191,538,324,595.35
  5. Step 5: Solve for x
    x = 191,538,324,595.35/495,136.23
  6. Step 6: Final answer
    x = 386,839.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.