Home / 878,638.17-1,212,504.59-496,664.95

Finding the Fourth Proportional to 878,638.17, 1,212,504.59 and 496,664.95

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Solution

The fourth proportional to 878,638.17, 1,212,504.59 and 496,664.95 is: 685,388.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,638.17 : 1,212,504.59 = 496,664.95 : x
  2. Step 2: Convert to fraction form
    878,638.17/1,212,504.59 = 496,664.95/x
  3. Step 3: Cross multiply
    878,638.17x = 1,212,504.59 × 496,664.95
  4. Step 4: Simplify right side
    878,638.17x = 602,208,531,567.12
  5. Step 5: Solve for x
    x = 602,208,531,567.12/878,638.17
  6. Step 6: Final answer
    x = 685,388.54

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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.