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Finding the Fourth Proportional to 880,807.20, 1,321,210.80 and 383,143.20

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Solution

The fourth proportional to 880,807.20, 1,321,210.80 and 383,143.20 is: 574,714.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,807.20 : 1,321,210.80 = 383,143.20 : x
  2. Step 2: Convert to fraction form
    880,807.20/1,321,210.80 = 383,143.20/x
  3. Step 3: Cross multiply
    880,807.20x = 1,321,210.80 × 383,143.20
  4. Step 4: Simplify right side
    880,807.20x = 506,212,933,786.56
  5. Step 5: Solve for x
    x = 506,212,933,786.56/880,807.20
  6. Step 6: Final answer
    x = 574,714.80

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Half scale
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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.