Home / 865,192.80-1,297,037.28-415,688.16

Finding the Fourth Proportional to 865,192.80, 1,297,037.28 and 415,688.16

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Solution

The fourth proportional to 865,192.80, 1,297,037.28 and 415,688.16 is: 623,170.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,192.80 : 1,297,037.28 = 415,688.16 : x
  2. Step 2: Convert to fraction form
    865,192.80/1,297,037.28 = 415,688.16/x
  3. Step 3: Cross multiply
    865,192.80x = 1,297,037.28 × 415,688.16
  4. Step 4: Simplify right side
    865,192.80x = 539,163,040,374.61
  5. Step 5: Solve for x
    x = 539,163,040,374.61/865,192.80
  6. Step 6: Final answer
    x = 623,170.97

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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.