Home / 876,071.40-1,208,976.30-488,882.72

Finding the Fourth Proportional to 876,071.40, 1,208,976.30 and 488,882.72

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Solution

The fourth proportional to 876,071.40, 1,208,976.30 and 488,882.72 is: 674,656.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,071.40 : 1,208,976.30 = 488,882.72 : x
  2. Step 2: Convert to fraction form
    876,071.40/1,208,976.30 = 488,882.72/x
  3. Step 3: Cross multiply
    876,071.40x = 1,208,976.30 × 488,882.72
  4. Step 4: Simplify right side
    876,071.40x = 591,047,621,959.54
  5. Step 5: Solve for x
    x = 591,047,621,959.54/876,071.40
  6. Step 6: Final answer
    x = 674,656.91

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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.