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Finding the Fourth Proportional to 673,717.50, 929,730.15 and 371,913.66

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Solution

The fourth proportional to 673,717.50, 929,730.15 and 371,913.66 is: 513,240.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,717.50 : 929,730.15 = 371,913.66 : x
  2. Step 2: Convert to fraction form
    673,717.50/929,730.15 = 371,913.66/x
  3. Step 3: Cross multiply
    673,717.50x = 929,730.15 × 371,913.66
  4. Step 4: Simplify right side
    673,717.50x = 345,779,342,898.85
  5. Step 5: Solve for x
    x = 345,779,342,898.85/673,717.50
  6. Step 6: Final answer
    x = 513,240.85

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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.