Home / 1,393,167.21-1,920,790.90-902,269.32

Finding the Fourth Proportional to 1,393,167.21, 1,920,790.90 and 902,269.32

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Solution

The fourth proportional to 1,393,167.21, 1,920,790.90 and 902,269.32 is: 1,243,978.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,167.21 : 1,920,790.90 = 902,269.32 : x
  2. Step 2: Convert to fraction form
    1,393,167.21/1,920,790.90 = 902,269.32/x
  3. Step 3: Cross multiply
    1,393,167.21x = 1,920,790.90 × 902,269.32
  4. Step 4: Simplify right side
    1,393,167.21x = 1,733,070,694,693.84
  5. Step 5: Solve for x
    x = 1,733,070,694,693.84/1,393,167.21
  6. Step 6: Final answer
    x = 1,243,978.96

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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.