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Finding the Fourth Proportional to 865,859.36, 1,194,878.40 and 483,876.32

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Solution

The fourth proportional to 865,859.36, 1,194,878.40 and 483,876.32 is: 667,745.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,859.36 : 1,194,878.40 = 483,876.32 : x
  2. Step 2: Convert to fraction form
    865,859.36/1,194,878.40 = 483,876.32/x
  3. Step 3: Cross multiply
    865,859.36x = 1,194,878.40 × 483,876.32
  4. Step 4: Simplify right side
    865,859.36x = 578,173,363,039.49
  5. Step 5: Solve for x
    x = 578,173,363,039.49/865,859.36
  6. Step 6: Final answer
    x = 667,745.12

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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.