Home / 878,170.50-1,211,877.27-490,999.77

Finding the Fourth Proportional to 878,170.50, 1,211,877.27 and 490,999.77

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Solution

The fourth proportional to 878,170.50, 1,211,877.27 and 490,999.77 is: 677,580.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,170.50 : 1,211,877.27 = 490,999.77 : x
  2. Step 2: Convert to fraction form
    878,170.50/1,211,877.27 = 490,999.77/x
  3. Step 3: Cross multiply
    878,170.50x = 1,211,877.27 × 490,999.77
  4. Step 4: Simplify right side
    878,170.50x = 595,031,460,838.23
  5. Step 5: Solve for x
    x = 595,031,460,838.23/878,170.50
  6. Step 6: Final answer
    x = 677,580.79

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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.