Home / 878,721.28-1,212,687.66-496,783.60

Finding the Fourth Proportional to 878,721.28, 1,212,687.66 and 496,783.60

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Solution

The fourth proportional to 878,721.28, 1,212,687.66 and 496,783.60 is: 685,590.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,721.28 : 1,212,687.66 = 496,783.60 : x
  2. Step 2: Convert to fraction form
    878,721.28/1,212,687.66 = 496,783.60/x
  3. Step 3: Cross multiply
    878,721.28x = 1,212,687.66 × 496,783.60
  4. Step 4: Simplify right side
    878,721.28x = 602,443,341,410.38
  5. Step 5: Solve for x
    x = 602,443,341,410.38/878,721.28
  6. Step 6: Final answer
    x = 685,590.93

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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.