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Finding the Fourth Proportional to 660,416.10, 990,624.15 and 548,320.20

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Solution

The fourth proportional to 660,416.10, 990,624.15 and 548,320.20 is: 822,480.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,416.10 : 990,624.15 = 548,320.20 : x
  2. Step 2: Convert to fraction form
    660,416.10/990,624.15 = 548,320.20/x
  3. Step 3: Cross multiply
    660,416.10x = 990,624.15 × 548,320.20
  4. Step 4: Simplify right side
    660,416.10x = 543,179,232,052.83
  5. Step 5: Solve for x
    x = 543,179,232,052.83/660,416.10
  6. Step 6: Final answer
    x = 822,480.30

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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.