Home / 1,290,861.76-1,781,433.12-710,110.48

Finding the Fourth Proportional to 1,290,861.76, 1,781,433.12 and 710,110.48

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Solution

The fourth proportional to 1,290,861.76, 1,781,433.12 and 710,110.48 is: 979,976.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,861.76 : 1,781,433.12 = 710,110.48 : x
  2. Step 2: Convert to fraction form
    1,290,861.76/1,781,433.12 = 710,110.48/x
  3. Step 3: Cross multiply
    1,290,861.76x = 1,781,433.12 × 710,110.48
  4. Step 4: Simplify right side
    1,290,861.76x = 1,265,014,327,931.10
  5. Step 5: Solve for x
    x = 1,265,014,327,931.10/1,290,861.76
  6. Step 6: Final answer
    x = 979,976.61

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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.