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Finding the Fourth Proportional to 673,669.16, 929,661.54 and 371,861

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Solution

The fourth proportional to 673,669.16, 929,661.54 and 371,861 is: 513,167.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,669.16 : 929,661.54 = 371,861 : x
  2. Step 2: Convert to fraction form
    673,669.16/929,661.54 = 371,861/x
  3. Step 3: Cross multiply
    673,669.16x = 929,661.54 × 371,861
  4. Step 4: Simplify right side
    673,669.16x = 345,704,869,925.94
  5. Step 5: Solve for x
    x = 345,704,869,925.94/673,669.16
  6. Step 6: Final answer
    x = 513,167.13

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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.