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Finding the Fourth Proportional to 545,889.20, 818,056.20 and 402,616.40

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Solution

The fourth proportional to 545,889.20, 818,056.20 and 402,616.40 is: 603,351.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,889.20 : 818,056.20 = 402,616.40 : x
  2. Step 2: Convert to fraction form
    545,889.20/818,056.20 = 402,616.40/x
  3. Step 3: Cross multiply
    545,889.20x = 818,056.20 × 402,616.40
  4. Step 4: Simplify right side
    545,889.20x = 329,362,842,241.68
  5. Step 5: Solve for x
    x = 329,362,842,241.68/545,889.20
  6. Step 6: Final answer
    x = 603,351.09

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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.