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Finding the Fourth Proportional to 661,661.60, 993,010.80 and 306,719.60

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Solution

The fourth proportional to 661,661.60, 993,010.80 and 306,719.60 is: 460,319.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,661.60 : 993,010.80 = 306,719.60 : x
  2. Step 2: Convert to fraction form
    661,661.60/993,010.80 = 306,719.60/x
  3. Step 3: Cross multiply
    661,661.60x = 993,010.80 × 306,719.60
  4. Step 4: Simplify right side
    661,661.60x = 304,575,875,371.68
  5. Step 5: Solve for x
    x = 304,575,875,371.68/661,661.60
  6. Step 6: Final answer
    x = 460,319.71

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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.