Home / 644,982.12-890,003.00-386,869.57

Finding the Fourth Proportional to 644,982.12, 890,003.00 and 386,869.57

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Solution

The fourth proportional to 644,982.12, 890,003.00 and 386,869.57 is: 533,836.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,982.12 : 890,003.00 = 386,869.57 : x
  2. Step 2: Convert to fraction form
    644,982.12/890,003.00 = 386,869.57/x
  3. Step 3: Cross multiply
    644,982.12x = 890,003.00 × 386,869.57
  4. Step 4: Simplify right side
    644,982.12x = 344,315,076,650.88
  5. Step 5: Solve for x
    x = 344,315,076,650.88/644,982.12
  6. Step 6: Final answer
    x = 533,836.62

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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.