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Finding the Fourth Proportional to 647,885.02, 972,108.22 and 348,015.74

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Solution

The fourth proportional to 647,885.02, 972,108.22 and 348,015.74 is: 522,174.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,885.02 : 972,108.22 = 348,015.74 : x
  2. Step 2: Convert to fraction form
    647,885.02/972,108.22 = 348,015.74/x
  3. Step 3: Cross multiply
    647,885.02x = 972,108.22 × 348,015.74
  4. Step 4: Simplify right side
    647,885.02x = 338,308,961,543.38
  5. Step 5: Solve for x
    x = 338,308,961,543.38/647,885.02
  6. Step 6: Final answer
    x = 522,174.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.