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Finding the Fourth Proportional to 902,379.64, 1,353,417.52 and 422,657.68

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Solution

The fourth proportional to 902,379.64, 1,353,417.52 and 422,657.68 is: 633,915.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    902,379.64 : 1,353,417.52 = 422,657.68 : x
  2. Step 2: Convert to fraction form
    902,379.64/1,353,417.52 = 422,657.68/x
  3. Step 3: Cross multiply
    902,379.64x = 1,353,417.52 × 422,657.68
  4. Step 4: Simplify right side
    902,379.64x = 572,032,309,074.55
  5. Step 5: Solve for x
    x = 572,032,309,074.55/902,379.64
  6. Step 6: Final answer
    x = 633,915.35

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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.