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Finding the Fourth Proportional to 634,878.14, 876,142.58 and 348,424.88

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Solution

The fourth proportional to 634,878.14, 876,142.58 and 348,424.88 is: 480,832.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,878.14 : 876,142.58 = 348,424.88 : x
  2. Step 2: Convert to fraction form
    634,878.14/876,142.58 = 348,424.88/x
  3. Step 3: Cross multiply
    634,878.14x = 876,142.58 × 348,424.88
  4. Step 4: Simplify right side
    634,878.14x = 305,269,867,176.55
  5. Step 5: Solve for x
    x = 305,269,867,176.55/634,878.14
  6. Step 6: Final answer
    x = 480,832.23

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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.