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Finding the Fourth Proportional to 447,776.40, 671,664.60 and 306,058.80

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Solution

The fourth proportional to 447,776.40, 671,664.60 and 306,058.80 is: 459,088.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,776.40 : 671,664.60 = 306,058.80 : x
  2. Step 2: Convert to fraction form
    447,776.40/671,664.60 = 306,058.80/x
  3. Step 3: Cross multiply
    447,776.40x = 671,664.60 × 306,058.80
  4. Step 4: Simplify right side
    447,776.40x = 205,568,861,478.48
  5. Step 5: Solve for x
    x = 205,568,861,478.48/447,776.40
  6. Step 6: Final answer
    x = 459,088.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.