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Finding the Fourth Proportional to 634,878.92, 876,130.32 and 348,403.78

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Solution

The fourth proportional to 634,878.92, 876,130.32 and 348,403.78 is: 480,795.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,878.92 : 876,130.32 = 348,403.78 : x
  2. Step 2: Convert to fraction form
    634,878.92/876,130.32 = 348,403.78/x
  3. Step 3: Cross multiply
    634,878.92x = 876,130.32 × 348,403.78
  4. Step 4: Simplify right side
    634,878.92x = 305,247,115,260.61
  5. Step 5: Solve for x
    x = 305,247,115,260.61/634,878.92
  6. Step 6: Final answer
    x = 480,795.80

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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.