Home / 1,330,390.80-1,995,586.20-383,792.40

Finding the Fourth Proportional to 1,330,390.80, 1,995,586.20 and 383,792.40

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Solution

The fourth proportional to 1,330,390.80, 1,995,586.20 and 383,792.40 is: 575,688.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,390.80 : 1,995,586.20 = 383,792.40 : x
  2. Step 2: Convert to fraction form
    1,330,390.80/1,995,586.20 = 383,792.40/x
  3. Step 3: Cross multiply
    1,330,390.80x = 1,995,586.20 × 383,792.40
  4. Step 4: Simplify right side
    1,330,390.80x = 765,890,817,104.88
  5. Step 5: Solve for x
    x = 765,890,817,104.88/1,330,390.80
  6. Step 6: Final answer
    x = 575,688.60

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Double scale
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Similar ratio
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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.