Home / 890,178.50-1,228,446.34-487,761.86

Finding the Fourth Proportional to 890,178.50, 1,228,446.34 and 487,761.86

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Solution

The fourth proportional to 890,178.50, 1,228,446.34 and 487,761.86 is: 673,111.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,178.50 : 1,228,446.34 = 487,761.86 : x
  2. Step 2: Convert to fraction form
    890,178.50/1,228,446.34 = 487,761.86/x
  3. Step 3: Cross multiply
    890,178.50x = 1,228,446.34 × 487,761.86
  4. Step 4: Simplify right side
    890,178.50x = 599,189,271,708.59
  5. Step 5: Solve for x
    x = 599,189,271,708.59/890,178.50
  6. Step 6: Final answer
    x = 673,111.37

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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.