Home / 878,792.45-1,212,684.75-491,533.07

Finding the Fourth Proportional to 878,792.45, 1,212,684.75 and 491,533.07

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Solution

The fourth proportional to 878,792.45, 1,212,684.75 and 491,533.07 is: 678,288.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,792.45 : 1,212,684.75 = 491,533.07 : x
  2. Step 2: Convert to fraction form
    878,792.45/1,212,684.75 = 491,533.07/x
  3. Step 3: Cross multiply
    878,792.45x = 1,212,684.75 × 491,533.07
  4. Step 4: Simplify right side
    878,792.45x = 596,074,652,046.26
  5. Step 5: Solve for x
    x = 596,074,652,046.26/878,792.45
  6. Step 6: Final answer
    x = 678,288.32

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Double scale
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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.