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Finding the Fourth Proportional to 980,886.92, 1,354,284.48 and 877,199.39

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Solution

The fourth proportional to 980,886.92, 1,354,284.48 and 877,199.39 is: 1,211,125.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,886.92 : 1,354,284.48 = 877,199.39 : x
  2. Step 2: Convert to fraction form
    980,886.92/1,354,284.48 = 877,199.39/x
  3. Step 3: Cross multiply
    980,886.92x = 1,354,284.48 × 877,199.39
  4. Step 4: Simplify right side
    980,886.92x = 1,187,977,512,971.04
  5. Step 5: Solve for x
    x = 1,187,977,512,971.04/980,886.92
  6. Step 6: Final answer
    x = 1,211,125.86

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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.