Home / 458,213.40-686,736.90-408,058.20

Finding the Fourth Proportional to 458,213.40, 686,736.90 and 408,058.20

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Solution

The fourth proportional to 458,213.40, 686,736.90 and 408,058.20 is: 611,567.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,213.40 : 686,736.90 = 408,058.20 : x
  2. Step 2: Convert to fraction form
    458,213.40/686,736.90 = 408,058.20/x
  3. Step 3: Cross multiply
    458,213.40x = 686,736.90 × 408,058.20
  4. Step 4: Simplify right side
    458,213.40x = 280,228,623,287.58
  5. Step 5: Solve for x
    x = 280,228,623,287.58/458,213.40
  6. Step 6: Final answer
    x = 611,567.94

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1.5x scale

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.