Home / 890,391.86-1,228,520.37-527,900.66

Finding the Fourth Proportional to 890,391.86, 1,228,520.37 and 527,900.66

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Solution

The fourth proportional to 890,391.86, 1,228,520.37 and 527,900.66 is: 728,372.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,391.86 : 1,228,520.37 = 527,900.66 : x
  2. Step 2: Convert to fraction form
    890,391.86/1,228,520.37 = 527,900.66/x
  3. Step 3: Cross multiply
    890,391.86x = 1,228,520.37 × 527,900.66
  4. Step 4: Simplify right side
    890,391.86x = 648,536,714,146.44
  5. Step 5: Solve for x
    x = 648,536,714,146.44/890,391.86
  6. Step 6: Final answer
    x = 728,372.24

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Double scale
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1.5x scale

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.