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Finding the Fourth Proportional to 545,853.20, 818,002.20 and 402,580.40

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Solution

The fourth proportional to 545,853.20, 818,002.20 and 402,580.40 is: 603,297.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,853.20 : 818,002.20 = 402,580.40 : x
  2. Step 2: Convert to fraction form
    545,853.20/818,002.20 = 402,580.40/x
  3. Step 3: Cross multiply
    545,853.20x = 818,002.20 × 402,580.40
  4. Step 4: Simplify right side
    545,853.20x = 329,311,652,876.88
  5. Step 5: Solve for x
    x = 329,311,652,876.88/545,853.20
  6. Step 6: Final answer
    x = 603,297.10

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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.