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Finding the Fourth Proportional to 878,873.54, 1,212,878.14 and 496,877.54

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Solution

The fourth proportional to 878,873.54, 1,212,878.14 and 496,877.54 is: 685,709.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,873.54 : 1,212,878.14 = 496,877.54 : x
  2. Step 2: Convert to fraction form
    878,873.54/1,212,878.14 = 496,877.54/x
  3. Step 3: Cross multiply
    878,873.54x = 1,212,878.14 × 496,877.54
  4. Step 4: Simplify right side
    878,873.54x = 602,651,899,216.39
  5. Step 5: Solve for x
    x = 602,651,899,216.39/878,873.54
  6. Step 6: Final answer
    x = 685,709.46

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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.