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Finding the Fourth Proportional to 640,312.84, 960,167.82 and 374,150.20

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Solution

The fourth proportional to 640,312.84, 960,167.82 and 374,150.20 is: 561,049.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,312.84 : 960,167.82 = 374,150.20 : x
  2. Step 2: Convert to fraction form
    640,312.84/960,167.82 = 374,150.20/x
  3. Step 3: Cross multiply
    640,312.84x = 960,167.82 × 374,150.20
  4. Step 4: Simplify right side
    640,312.84x = 359,246,981,886.56
  5. Step 5: Solve for x
    x = 359,246,981,886.56/640,312.84
  6. Step 6: Final answer
    x = 561,049.16

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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.