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Finding the Fourth Proportional to 634,286.40, 875,314.80 and 347,811.12

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Solution

The fourth proportional to 634,286.40, 875,314.80 and 347,811.12 is: 479,979.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,286.40 : 875,314.80 = 347,811.12 : x
  2. Step 2: Convert to fraction form
    634,286.40/875,314.80 = 347,811.12/x
  3. Step 3: Cross multiply
    634,286.40x = 875,314.80 × 347,811.12
  4. Step 4: Simplify right side
    634,286.40x = 304,444,220,940.58
  5. Step 5: Solve for x
    x = 304,444,220,940.58/634,286.40
  6. Step 6: Final answer
    x = 479,979.11

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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.