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Finding the Fourth Proportional to 878,956.12, 1,212,952.80 and 496,996.48

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Solution

The fourth proportional to 878,956.12, 1,212,952.80 and 496,996.48 is: 685,851.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,956.12 : 1,212,952.80 = 496,996.48 : x
  2. Step 2: Convert to fraction form
    878,956.12/1,212,952.80 = 496,996.48/x
  3. Step 3: Cross multiply
    878,956.12x = 1,212,952.80 × 496,996.48
  4. Step 4: Simplify right side
    878,956.12x = 602,833,272,006.14
  5. Step 5: Solve for x
    x = 602,833,272,006.14/878,956.12
  6. Step 6: Final answer
    x = 685,851.38

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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.