Home / 780,221.10-1,170,382.71-240,411.18

Finding the Fourth Proportional to 780,221.10, 1,170,382.71 and 240,411.18

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Solution

The fourth proportional to 780,221.10, 1,170,382.71 and 240,411.18 is: 360,632.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,221.10 : 1,170,382.71 = 240,411.18 : x
  2. Step 2: Convert to fraction form
    780,221.10/1,170,382.71 = 240,411.18/x
  3. Step 3: Cross multiply
    780,221.10x = 1,170,382.71 × 240,411.18
  4. Step 4: Simplify right side
    780,221.10x = 281,373,088,362.70
  5. Step 5: Solve for x
    x = 281,373,088,362.70/780,221.10
  6. Step 6: Final answer
    x = 360,632.50

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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.