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Finding the Fourth Proportional to 878,874.29, 1,212,879.17 and 496,878.29

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Solution

The fourth proportional to 878,874.29, 1,212,879.17 and 496,878.29 is: 685,710.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,874.29 : 1,212,879.17 = 496,878.29 : x
  2. Step 2: Convert to fraction form
    878,874.29/1,212,879.17 = 496,878.29/x
  3. Step 3: Cross multiply
    878,874.29x = 1,212,879.17 × 496,878.29
  4. Step 4: Simplify right side
    878,874.29x = 602,653,323,144.02
  5. Step 5: Solve for x
    x = 602,653,323,144.02/878,874.29
  6. Step 6: Final answer
    x = 685,710.50

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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.