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Finding the Fourth Proportional to 634,906.99, 876,144.09 and 348,431.86

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Solution

The fourth proportional to 634,906.99, 876,144.09 and 348,431.86 is: 480,820.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,906.99 : 876,144.09 = 348,431.86 : x
  2. Step 2: Convert to fraction form
    634,906.99/876,144.09 = 348,431.86/x
  3. Step 3: Cross multiply
    634,906.99x = 876,144.09 × 348,431.86
  4. Step 4: Simplify right side
    634,906.99x = 305,276,514,906.71
  5. Step 5: Solve for x
    x = 305,276,514,906.71/634,906.99
  6. Step 6: Final answer
    x = 480,820.84

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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.