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Finding the Fourth Proportional to 660,232.80, 911,124 and 373,808.16

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Solution

The fourth proportional to 660,232.80, 911,124 and 373,808.16 is: 515,856.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,232.80 : 911,124 = 373,808.16 : x
  2. Step 2: Convert to fraction form
    660,232.80/911,124 = 373,808.16/x
  3. Step 3: Cross multiply
    660,232.80x = 911,124 × 373,808.16
  4. Step 4: Simplify right side
    660,232.80x = 340,585,585,971.84
  5. Step 5: Solve for x
    x = 340,585,585,971.84/660,232.80
  6. Step 6: Final answer
    x = 515,856.81

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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.