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Finding the Fourth Proportional to 813,149, 1,122,145.62 and 495,197

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Solution

The fourth proportional to 813,149, 1,122,145.62 and 495,197 is: 683,371.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,149 : 1,122,145.62 = 495,197 : x
  2. Step 2: Convert to fraction form
    813,149/1,122,145.62 = 495,197/x
  3. Step 3: Cross multiply
    813,149x = 1,122,145.62 × 495,197
  4. Step 4: Simplify right side
    813,149x = 555,683,144,587.14
  5. Step 5: Solve for x
    x = 555,683,144,587.14/813,149
  6. Step 6: Final answer
    x = 683,371.86

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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.