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Finding the Fourth Proportional to 641,676.62, 964,259.68 and 342,368.66

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Solution

The fourth proportional to 641,676.62, 964,259.68 and 342,368.66 is: 514,483.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,676.62 : 964,259.68 = 342,368.66 : x
  2. Step 2: Convert to fraction form
    641,676.62/964,259.68 = 342,368.66/x
  3. Step 3: Cross multiply
    641,676.62x = 964,259.68 × 342,368.66
  4. Step 4: Simplify right side
    641,676.62x = 330,132,294,533.63
  5. Step 5: Solve for x
    x = 330,132,294,533.63/641,676.62
  6. Step 6: Final answer
    x = 514,483.91

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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.