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Finding the Fourth Proportional to 426,364.32, 639,321.62 and 377,800.64

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Solution

The fourth proportional to 426,364.32, 639,321.62 and 377,800.64 is: 566,501.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,364.32 : 639,321.62 = 377,800.64 : x
  2. Step 2: Convert to fraction form
    426,364.32/639,321.62 = 377,800.64/x
  3. Step 3: Cross multiply
    426,364.32x = 639,321.62 × 377,800.64
  4. Step 4: Simplify right side
    426,364.32x = 241,536,114,005.23
  5. Step 5: Solve for x
    x = 241,536,114,005.23/426,364.32
  6. Step 6: Final answer
    x = 566,501.70

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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.