Home / 1,120,212.40-1,680,124.20-409,874.80

Finding the Fourth Proportional to 1,120,212.40, 1,680,124.20 and 409,874.80

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Solution

The fourth proportional to 1,120,212.40, 1,680,124.20 and 409,874.80 is: 614,741.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,212.40 : 1,680,124.20 = 409,874.80 : x
  2. Step 2: Convert to fraction form
    1,120,212.40/1,680,124.20 = 409,874.80/x
  3. Step 3: Cross multiply
    1,120,212.40x = 1,680,124.20 × 409,874.80
  4. Step 4: Simplify right side
    1,120,212.40x = 688,640,570,450.16
  5. Step 5: Solve for x
    x = 688,640,570,450.16/1,120,212.40
  6. Step 6: Final answer
    x = 614,741.07

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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.