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Finding the Fourth Proportional to 673,671.76, 929,673.48 and 371,859.28

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Solution

The fourth proportional to 673,671.76, 929,673.48 and 371,859.28 is: 513,169.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,671.76 : 929,673.48 = 371,859.28 : x
  2. Step 2: Convert to fraction form
    673,671.76/929,673.48 = 371,859.28/x
  3. Step 3: Cross multiply
    673,671.76x = 929,673.48 × 371,859.28
  4. Step 4: Simplify right side
    673,671.76x = 345,707,710,907.89
  5. Step 5: Solve for x
    x = 345,707,710,907.89/673,671.76
  6. Step 6: Final answer
    x = 513,169.37

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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.