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Finding the Fourth Proportional to 671,003.68, 1,005,054 and 315,484.96

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Solution

The fourth proportional to 671,003.68, 1,005,054 and 315,484.96 is: 472,544.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,003.68 : 1,005,054 = 315,484.96 : x
  2. Step 2: Convert to fraction form
    671,003.68/1,005,054 = 315,484.96/x
  3. Step 3: Cross multiply
    671,003.68x = 1,005,054 × 315,484.96
  4. Step 4: Simplify right side
    671,003.68x = 317,079,420,987.84
  5. Step 5: Solve for x
    x = 317,079,420,987.84/671,003.68
  6. Step 6: Final answer
    x = 472,544.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.