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Finding the Fourth Proportional to 673,653.66, 929,640.15 and 371,845.50

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Solution

The fourth proportional to 673,653.66, 929,640.15 and 371,845.50 is: 513,145.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,653.66 : 929,640.15 = 371,845.50 : x
  2. Step 2: Convert to fraction form
    673,653.66/929,640.15 = 371,845.50/x
  3. Step 3: Cross multiply
    673,653.66x = 929,640.15 × 371,845.50
  4. Step 4: Simplify right side
    673,653.66x = 345,682,506,396.83
  5. Step 5: Solve for x
    x = 345,682,506,396.83/673,653.66
  6. Step 6: Final answer
    x = 513,145.74

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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.