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Finding the Fourth Proportional to 485,616.20, 728,424.30 and 373,512.20

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Solution

The fourth proportional to 485,616.20, 728,424.30 and 373,512.20 is: 560,268.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,616.20 : 728,424.30 = 373,512.20 : x
  2. Step 2: Convert to fraction form
    485,616.20/728,424.30 = 373,512.20/x
  3. Step 3: Cross multiply
    485,616.20x = 728,424.30 × 373,512.20
  4. Step 4: Simplify right side
    485,616.20x = 272,075,362,826.46
  5. Step 5: Solve for x
    x = 272,075,362,826.46/485,616.20
  6. Step 6: Final answer
    x = 560,268.30

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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.