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Finding the Fourth Proportional to 673,552.35, 929,661.89 and 387,238.77

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Solution

The fourth proportional to 673,552.35, 929,661.89 and 387,238.77 is: 534,481.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,552.35 : 929,661.89 = 387,238.77 : x
  2. Step 2: Convert to fraction form
    673,552.35/929,661.89 = 387,238.77/x
  3. Step 3: Cross multiply
    673,552.35x = 929,661.89 × 387,238.77
  4. Step 4: Simplify right side
    673,552.35x = 360,001,124,863.28
  5. Step 5: Solve for x
    x = 360,001,124,863.28/673,552.35
  6. Step 6: Final answer
    x = 534,481.28

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1.5x scale

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.