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Finding the Fourth Proportional to 431,099.39, 645,544.98 and 359,844.87

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Solution

The fourth proportional to 431,099.39, 645,544.98 and 359,844.87 is: 538,845.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,099.39 : 645,544.98 = 359,844.87 : x
  2. Step 2: Convert to fraction form
    431,099.39/645,544.98 = 359,844.87/x
  3. Step 3: Cross multiply
    431,099.39x = 645,544.98 × 359,844.87
  4. Step 4: Simplify right side
    431,099.39x = 232,296,051,828.05
  5. Step 5: Solve for x
    x = 232,296,051,828.05/431,099.39
  6. Step 6: Final answer
    x = 538,845.70

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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.