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Finding the Fourth Proportional to 638,520, 881,163.68 and 352,050.35

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Solution

The fourth proportional to 638,520, 881,163.68 and 352,050.35 is: 485,832.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,520 : 881,163.68 = 352,050.35 : x
  2. Step 2: Convert to fraction form
    638,520/881,163.68 = 352,050.35/x
  3. Step 3: Cross multiply
    638,520x = 881,163.68 × 352,050.35
  4. Step 4: Simplify right side
    638,520x = 310,213,975,785.22
  5. Step 5: Solve for x
    x = 310,213,975,785.22/638,520
  6. Step 6: Final answer
    x = 485,832.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.