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Finding the Fourth Proportional to 876,309.60, 1,313,427.60 and 370,869.60

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Solution

The fourth proportional to 876,309.60, 1,313,427.60 and 370,869.60 is: 555,865.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,309.60 : 1,313,427.60 = 370,869.60 : x
  2. Step 2: Convert to fraction form
    876,309.60/1,313,427.60 = 370,869.60/x
  3. Step 3: Cross multiply
    876,309.60x = 1,313,427.60 × 370,869.60
  4. Step 4: Simplify right side
    876,309.60x = 487,110,368,640.96
  5. Step 5: Solve for x
    x = 487,110,368,640.96/876,309.60
  6. Step 6: Final answer
    x = 555,865.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.