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Finding the Fourth Proportional to 673,561.63, 930,730.93 and 479,632.66

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Solution

The fourth proportional to 673,561.63, 930,730.93 and 479,632.66 is: 662,758.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,561.63 : 930,730.93 = 479,632.66 : x
  2. Step 2: Convert to fraction form
    673,561.63/930,730.93 = 479,632.66/x
  3. Step 3: Cross multiply
    673,561.63x = 930,730.93 × 479,632.66
  4. Step 4: Simplify right side
    673,561.63x = 446,408,948,174.27
  5. Step 5: Solve for x
    x = 446,408,948,174.27/673,561.63
  6. Step 6: Final answer
    x = 662,758.87

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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.