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Finding the Fourth Proportional to 673,876.38, 929,613.78 and 401,752.74

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Solution

The fourth proportional to 673,876.38, 929,613.78 and 401,752.74 is: 554,218.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,876.38 : 929,613.78 = 401,752.74 : x
  2. Step 2: Convert to fraction form
    673,876.38/929,613.78 = 401,752.74/x
  3. Step 3: Cross multiply
    673,876.38x = 929,613.78 × 401,752.74
  4. Step 4: Simplify right side
    673,876.38x = 373,474,883,256.76
  5. Step 5: Solve for x
    x = 373,474,883,256.76/673,876.38
  6. Step 6: Final answer
    x = 554,218.69

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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.