Home / 880,291.20-1,320,436.80-407,899.20

Finding the Fourth Proportional to 880,291.20, 1,320,436.80 and 407,899.20

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Solution

The fourth proportional to 880,291.20, 1,320,436.80 and 407,899.20 is: 611,848.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,291.20 : 1,320,436.80 = 407,899.20 : x
  2. Step 2: Convert to fraction form
    880,291.20/1,320,436.80 = 407,899.20/x
  3. Step 3: Cross multiply
    880,291.20x = 1,320,436.80 × 407,899.20
  4. Step 4: Simplify right side
    880,291.20x = 538,605,114,370.56
  5. Step 5: Solve for x
    x = 538,605,114,370.56/880,291.20
  6. Step 6: Final answer
    x = 611,848.80

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Double scale
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Similar ratio
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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.