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Finding the Fourth Proportional to 647,457.82, 893,557.11 and 375,608.86

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Solution

The fourth proportional to 647,457.82, 893,557.11 and 375,608.86 is: 518,378.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,457.82 : 893,557.11 = 375,608.86 : x
  2. Step 2: Convert to fraction form
    647,457.82/893,557.11 = 375,608.86/x
  3. Step 3: Cross multiply
    647,457.82x = 893,557.11 × 375,608.86
  4. Step 4: Simplify right side
    647,457.82x = 335,627,967,432.00
  5. Step 5: Solve for x
    x = 335,627,967,432.00/647,457.82
  6. Step 6: Final answer
    x = 518,378.12

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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.