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Finding the Fourth Proportional to 878,881.52, 1,212,889.16 and 496,885.52

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Solution

The fourth proportional to 878,881.52, 1,212,889.16 and 496,885.52 is: 685,720.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,881.52 : 1,212,889.16 = 496,885.52 : x
  2. Step 2: Convert to fraction form
    878,881.52/1,212,889.16 = 496,885.52/x
  3. Step 3: Cross multiply
    878,881.52x = 1,212,889.16 × 496,885.52
  4. Step 4: Simplify right side
    878,881.52x = 602,667,060,968.96
  5. Step 5: Solve for x
    x = 602,667,060,968.96/878,881.52
  6. Step 6: Final answer
    x = 685,720.48

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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.