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Finding the Fourth Proportional to 469,420.47, 647,800.59 and 254,560.48

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Solution

The fourth proportional to 469,420.47, 647,800.59 and 254,560.48 is: 351,293.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,420.47 : 647,800.59 = 254,560.48 : x
  2. Step 2: Convert to fraction form
    469,420.47/647,800.59 = 254,560.48/x
  3. Step 3: Cross multiply
    469,420.47x = 647,800.59 × 254,560.48
  4. Step 4: Simplify right side
    469,420.47x = 164,904,429,134.68
  5. Step 5: Solve for x
    x = 164,904,429,134.68/469,420.47
  6. Step 6: Final answer
    x = 351,293.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.