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Finding the Fourth Proportional to 634,446.37, 875,560.55 and 347,978.53

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Solution

The fourth proportional to 634,446.37, 875,560.55 and 347,978.53 is: 480,223.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,446.37 : 875,560.55 = 347,978.53 : x
  2. Step 2: Convert to fraction form
    634,446.37/875,560.55 = 347,978.53/x
  3. Step 3: Cross multiply
    634,446.37x = 875,560.55 × 347,978.53
  4. Step 4: Simplify right side
    634,446.37x = 304,676,271,375.10
  5. Step 5: Solve for x
    x = 304,676,271,375.10/634,446.37
  6. Step 6: Final answer
    x = 480,223.84

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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.