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Finding the Fourth Proportional to 660,619.44, 911,624.22 and 374,141.62

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Solution

The fourth proportional to 660,619.44, 911,624.22 and 374,141.62 is: 516,298.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,619.44 : 911,624.22 = 374,141.62 : x
  2. Step 2: Convert to fraction form
    660,619.44/911,624.22 = 374,141.62/x
  3. Step 3: Cross multiply
    660,619.44x = 911,624.22 × 374,141.62
  4. Step 4: Simplify right side
    660,619.44x = 341,076,562,502.04
  5. Step 5: Solve for x
    x = 341,076,562,502.04/660,619.44
  6. Step 6: Final answer
    x = 516,298.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.