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Finding the Fourth Proportional to 545,856.30, 818,784.45 and 404,138.70

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Solution

The fourth proportional to 545,856.30, 818,784.45 and 404,138.70 is: 606,208.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,856.30 : 818,784.45 = 404,138.70 : x
  2. Step 2: Convert to fraction form
    545,856.30/818,784.45 = 404,138.70/x
  3. Step 3: Cross multiply
    545,856.30x = 818,784.45 × 404,138.70
  4. Step 4: Simplify right side
    545,856.30x = 330,902,483,203.22
  5. Step 5: Solve for x
    x = 330,902,483,203.22/545,856.30
  6. Step 6: Final answer
    x = 606,208.05

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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.