Home / 459,660,602.20-689,490,903.30-287,667,923.80

Finding the Fourth Proportional to 459,660,602.20, 689,490,903.30 and 287,667,923.80

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Solution

The fourth proportional to 459,660,602.20, 689,490,903.30 and 287,667,923.80 is: 431,501,885.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,660,602.20 : 689,490,903.30 = 287,667,923.80 : x
  2. Step 2: Convert to fraction form
    459,660,602.20/689,490,903.30 = 287,667,923.80/x
  3. Step 3: Cross multiply
    459,660,602.20x = 689,490,903.30 × 287,667,923.80
  4. Step 4: Simplify right side
    459,660,602.20x = 198,344,416,631,297,568
  5. Step 5: Solve for x
    x = 198,344,416,631,297,568/459,660,602.20
  6. Step 6: Final answer
    x = 431,501,885.70

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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.