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Finding the Fourth Proportional to 545,830.20, 818,745.30 and 510,400.80

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Solution

The fourth proportional to 545,830.20, 818,745.30 and 510,400.80 is: 765,601.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,830.20 : 818,745.30 = 510,400.80 : x
  2. Step 2: Convert to fraction form
    545,830.20/818,745.30 = 510,400.80/x
  3. Step 3: Cross multiply
    545,830.20x = 818,745.30 × 510,400.80
  4. Step 4: Simplify right side
    545,830.20x = 417,888,256,116.24
  5. Step 5: Solve for x
    x = 417,888,256,116.24/545,830.20
  6. Step 6: Final answer
    x = 765,601.20

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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.