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Finding the Fourth Proportional to 634,874.67, 876,152.28 and 348,405

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Solution

The fourth proportional to 634,874.67, 876,152.28 and 348,405 is: 480,812.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,874.67 : 876,152.28 = 348,405 : x
  2. Step 2: Convert to fraction form
    634,874.67/876,152.28 = 348,405/x
  3. Step 3: Cross multiply
    634,874.67x = 876,152.28 × 348,405
  4. Step 4: Simplify right side
    634,874.67x = 305,255,835,113.40
  5. Step 5: Solve for x
    x = 305,255,835,113.40/634,874.67
  6. Step 6: Final answer
    x = 480,812.75

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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.