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Finding the Fourth Proportional to 647,098.62, 894,610.40 and 485,673.45

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Solution

The fourth proportional to 647,098.62, 894,610.40 and 485,673.45 is: 671,440.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,098.62 : 894,610.40 = 485,673.45 : x
  2. Step 2: Convert to fraction form
    647,098.62/894,610.40 = 485,673.45/x
  3. Step 3: Cross multiply
    647,098.62x = 894,610.40 × 485,673.45
  4. Step 4: Simplify right side
    647,098.62x = 434,488,516,945.51
  5. Step 5: Solve for x
    x = 434,488,516,945.51/647,098.62
  6. Step 6: Final answer
    x = 671,440.96

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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.