Home / 890,435.88-1,228,620.42-527,700.12

Finding the Fourth Proportional to 890,435.88, 1,228,620.42 and 527,700.12

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Solution

The fourth proportional to 890,435.88, 1,228,620.42 and 527,700.12 is: 728,118.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,435.88 : 1,228,620.42 = 527,700.12 : x
  2. Step 2: Convert to fraction form
    890,435.88/1,228,620.42 = 527,700.12/x
  3. Step 3: Cross multiply
    890,435.88x = 1,228,620.42 × 527,700.12
  4. Step 4: Simplify right side
    890,435.88x = 648,343,143,068.45
  5. Step 5: Solve for x
    x = 648,343,143,068.45/890,435.88
  6. Step 6: Final answer
    x = 728,118.84

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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.