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Finding the Fourth Proportional to 618,962.75, 928,444.13 and 408,551.48

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Solution

The fourth proportional to 618,962.75, 928,444.13 and 408,551.48 is: 612,827.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,962.75 : 928,444.13 = 408,551.48 : x
  2. Step 2: Convert to fraction form
    618,962.75/928,444.13 = 408,551.48/x
  3. Step 3: Cross multiply
    618,962.75x = 928,444.13 × 408,551.48
  4. Step 4: Simplify right side
    618,962.75x = 379,317,223,408.81
  5. Step 5: Solve for x
    x = 379,317,223,408.81/618,962.75
  6. Step 6: Final answer
    x = 612,827.22

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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.