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Finding the Fourth Proportional to 640,311.84, 960,166.32 and 374,149.20

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Solution

The fourth proportional to 640,311.84, 960,166.32 and 374,149.20 is: 561,047.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,311.84 : 960,166.32 = 374,149.20 : x
  2. Step 2: Convert to fraction form
    640,311.84/960,166.32 = 374,149.20/x
  3. Step 3: Cross multiply
    640,311.84x = 960,166.32 × 374,149.20
  4. Step 4: Simplify right side
    640,311.84x = 359,245,460,494.94
  5. Step 5: Solve for x
    x = 359,245,460,494.94/640,311.84
  6. Step 6: Final answer
    x = 561,047.66

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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.