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Finding the Fourth Proportional to 634,878.28, 876,157.30 and 348,408.62

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Solution

The fourth proportional to 634,878.28, 876,157.30 and 348,408.62 is: 480,817.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,878.28 : 876,157.30 = 348,408.62 : x
  2. Step 2: Convert to fraction form
    634,878.28/876,157.30 = 348,408.62/x
  3. Step 3: Cross multiply
    634,878.28x = 876,157.30 × 348,408.62
  4. Step 4: Simplify right side
    634,878.28x = 305,260,755,795.93
  5. Step 5: Solve for x
    x = 305,260,755,795.93/634,878.28
  6. Step 6: Final answer
    x = 480,817.77

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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.