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Finding the Fourth Proportional to 459,475.74, 689,122.74 and 436,690.56

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Solution

The fourth proportional to 459,475.74, 689,122.74 and 436,690.56 is: 654,949.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,475.74 : 689,122.74 = 436,690.56 : x
  2. Step 2: Convert to fraction form
    459,475.74/689,122.74 = 436,690.56/x
  3. Step 3: Cross multiply
    459,475.74x = 689,122.74 × 436,690.56
  4. Step 4: Simplify right side
    459,475.74x = 300,933,395,239.33
  5. Step 5: Solve for x
    x = 300,933,395,239.33/459,475.74
  6. Step 6: Final answer
    x = 654,949.48

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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.