Home / 878,729.31-1,212,429.06-496,747.89

Finding the Fourth Proportional to 878,729.31, 1,212,429.06 and 496,747.89

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Solution

The fourth proportional to 878,729.31, 1,212,429.06 and 496,747.89 is: 685,389.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,729.31 : 1,212,429.06 = 496,747.89 : x
  2. Step 2: Convert to fraction form
    878,729.31/1,212,429.06 = 496,747.89/x
  3. Step 3: Cross multiply
    878,729.31x = 1,212,429.06 × 496,747.89
  4. Step 4: Simplify right side
    878,729.31x = 602,271,577,329.68
  5. Step 5: Solve for x
    x = 602,271,577,329.68/878,729.31
  6. Step 6: Final answer
    x = 685,389.20

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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.