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Finding the Fourth Proportional to 673,681.16, 929,678.10 and 371,873

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Solution

The fourth proportional to 673,681.16, 929,678.10 and 371,873 is: 513,183.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,681.16 : 929,678.10 = 371,873 : x
  2. Step 2: Convert to fraction form
    673,681.16/929,678.10 = 371,873/x
  3. Step 3: Cross multiply
    673,681.16x = 929,678.10 × 371,873
  4. Step 4: Simplify right side
    673,681.16x = 345,722,184,081.30
  5. Step 5: Solve for x
    x = 345,722,184,081.30/673,681.16
  6. Step 6: Final answer
    x = 513,183.69

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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.