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Finding the Fourth Proportional to 870,657.64, 1,201,441.60 and 488,610.60

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Solution

The fourth proportional to 870,657.64, 1,201,441.60 and 488,610.60 is: 674,245.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,657.64 : 1,201,441.60 = 488,610.60 : x
  2. Step 2: Convert to fraction form
    870,657.64/1,201,441.60 = 488,610.60/x
  3. Step 3: Cross multiply
    870,657.64x = 1,201,441.60 × 488,610.60
  4. Step 4: Simplify right side
    870,657.64x = 587,037,101,040.96
  5. Step 5: Solve for x
    x = 587,037,101,040.96/870,657.64
  6. Step 6: Final answer
    x = 674,245.62

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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.