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Finding the Fourth Proportional to 657,093.90, 985,640.85 and 433,145.10

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Solution

The fourth proportional to 657,093.90, 985,640.85 and 433,145.10 is: 649,717.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,093.90 : 985,640.85 = 433,145.10 : x
  2. Step 2: Convert to fraction form
    657,093.90/985,640.85 = 433,145.10/x
  3. Step 3: Cross multiply
    657,093.90x = 985,640.85 × 433,145.10
  4. Step 4: Simplify right side
    657,093.90x = 426,925,504,537.34
  5. Step 5: Solve for x
    x = 426,925,504,537.34/657,093.90
  6. Step 6: Final answer
    x = 649,717.65

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Double scale
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Similar ratio
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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.