Home / 1,090,443.92-1,635,549.21-380,485.40

Finding the Fourth Proportional to 1,090,443.92, 1,635,549.21 and 380,485.40

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Solution

The fourth proportional to 1,090,443.92, 1,635,549.21 and 380,485.40 is: 570,687.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090,443.92 : 1,635,549.21 = 380,485.40 : x
  2. Step 2: Convert to fraction form
    1,090,443.92/1,635,549.21 = 380,485.40/x
  3. Step 3: Cross multiply
    1,090,443.92x = 1,635,549.21 × 380,485.40
  4. Step 4: Simplify right side
    1,090,443.92x = 622,302,587,208.79
  5. Step 5: Solve for x
    x = 622,302,587,208.79/1,090,443.92
  6. Step 6: Final answer
    x = 570,687.39

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Double scale
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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.