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Finding the Fourth Proportional to 660,010.30, 990,015.45 and 474,768.70

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Solution

The fourth proportional to 660,010.30, 990,015.45 and 474,768.70 is: 712,153.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,010.30 : 990,015.45 = 474,768.70 : x
  2. Step 2: Convert to fraction form
    660,010.30/990,015.45 = 474,768.70/x
  3. Step 3: Cross multiply
    660,010.30x = 990,015.45 × 474,768.70
  4. Step 4: Simplify right side
    660,010.30x = 470,028,348,176.42
  5. Step 5: Solve for x
    x = 470,028,348,176.42/660,010.30
  6. Step 6: Final answer
    x = 712,153.05

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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.