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Finding the Fourth Proportional to 660,298.74, 990,331.01 and 300,385.97

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Solution

The fourth proportional to 660,298.74, 990,331.01 and 300,385.97 is: 450,525.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,298.74 : 990,331.01 = 300,385.97 : x
  2. Step 2: Convert to fraction form
    660,298.74/990,331.01 = 300,385.97/x
  3. Step 3: Cross multiply
    660,298.74x = 990,331.01 × 300,385.97
  4. Step 4: Simplify right side
    660,298.74x = 297,481,539,446.53
  5. Step 5: Solve for x
    x = 297,481,539,446.53/660,298.74
  6. Step 6: Final answer
    x = 450,525.68

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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.