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Finding the Fourth Proportional to 634,288.40, 875,317.56 and 347,813.12

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Solution

The fourth proportional to 634,288.40, 875,317.56 and 347,813.12 is: 479,981.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,288.40 : 875,317.56 = 347,813.12 : x
  2. Step 2: Convert to fraction form
    634,288.40/875,317.56 = 347,813.12/x
  3. Step 3: Cross multiply
    634,288.40x = 875,317.56 × 347,813.12
  4. Step 4: Simplify right side
    634,288.40x = 304,446,931,534.39
  5. Step 5: Solve for x
    x = 304,446,931,534.39/634,288.40
  6. Step 6: Final answer
    x = 479,981.87

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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.