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Finding the Fourth Proportional to 648,190.80, 894,143.88 and 379,866.96

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Solution

The fourth proportional to 648,190.80, 894,143.88 and 379,866.96 is: 524,005.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,190.80 : 894,143.88 = 379,866.96 : x
  2. Step 2: Convert to fraction form
    648,190.80/894,143.88 = 379,866.96/x
  3. Step 3: Cross multiply
    648,190.80x = 894,143.88 × 379,866.96
  4. Step 4: Simplify right side
    648,190.80x = 339,655,717,498.21
  5. Step 5: Solve for x
    x = 339,655,717,498.21/648,190.80
  6. Step 6: Final answer
    x = 524,005.77

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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.