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Finding the Fourth Proportional to 865,804.72, 1,194,866.28 and 483,833.68

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Solution

The fourth proportional to 865,804.72, 1,194,866.28 and 483,833.68 is: 667,721.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,804.72 : 1,194,866.28 = 483,833.68 : x
  2. Step 2: Convert to fraction form
    865,804.72/1,194,866.28 = 483,833.68/x
  3. Step 3: Cross multiply
    865,804.72x = 1,194,866.28 × 483,833.68
  4. Step 4: Simplify right side
    865,804.72x = 578,116,549,360.31
  5. Step 5: Solve for x
    x = 578,116,549,360.31/865,804.72
  6. Step 6: Final answer
    x = 667,721.64

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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.