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Finding the Fourth Proportional to 634,147.48, 875,100.30 and 347,661.28

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Solution

The fourth proportional to 634,147.48, 875,100.30 and 347,661.28 is: 479,759.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,147.48 : 875,100.30 = 347,661.28 : x
  2. Step 2: Convert to fraction form
    634,147.48/875,100.30 = 347,661.28/x
  3. Step 3: Cross multiply
    634,147.48x = 875,100.30 × 347,661.28
  4. Step 4: Simplify right side
    634,147.48x = 304,238,490,426.38
  5. Step 5: Solve for x
    x = 304,238,490,426.38/634,147.48
  6. Step 6: Final answer
    x = 479,759.84

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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.