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Finding the Fourth Proportional to 665,027.20, 997,540.80 and 455,075.20

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Solution

The fourth proportional to 665,027.20, 997,540.80 and 455,075.20 is: 682,612.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,027.20 : 997,540.80 = 455,075.20 : x
  2. Step 2: Convert to fraction form
    665,027.20/997,540.80 = 455,075.20/x
  3. Step 3: Cross multiply
    665,027.20x = 997,540.80 × 455,075.20
  4. Step 4: Simplify right side
    665,027.20x = 453,956,079,068.16
  5. Step 5: Solve for x
    x = 453,956,079,068.16/665,027.20
  6. Step 6: Final answer
    x = 682,612.80

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Similar ratio
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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.