Home / 859,091.72-1,185,640.56-491,602.80

Finding the Fourth Proportional to 859,091.72, 1,185,640.56 and 491,602.80

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Solution

The fourth proportional to 859,091.72, 1,185,640.56 and 491,602.80 is: 678,465.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,091.72 : 1,185,640.56 = 491,602.80 : x
  2. Step 2: Convert to fraction form
    859,091.72/1,185,640.56 = 491,602.80/x
  3. Step 3: Cross multiply
    859,091.72x = 1,185,640.56 × 491,602.80
  4. Step 4: Simplify right side
    859,091.72x = 582,864,219,089.57
  5. Step 5: Solve for x
    x = 582,864,219,089.57/859,091.72
  6. Step 6: Final answer
    x = 678,465.65

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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.