Home / 1,380,131.42-2,070,421.84-407,594.12

Finding the Fourth Proportional to 1,380,131.42, 2,070,421.84 and 407,594.12

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Solution

The fourth proportional to 1,380,131.42, 2,070,421.84 and 407,594.12 is: 611,457.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,131.42 : 2,070,421.84 = 407,594.12 : x
  2. Step 2: Convert to fraction form
    1,380,131.42/2,070,421.84 = 407,594.12/x
  3. Step 3: Cross multiply
    1,380,131.42x = 2,070,421.84 × 407,594.12
  4. Step 4: Simplify right side
    1,380,131.42x = 843,891,767,903.58
  5. Step 5: Solve for x
    x = 843,891,767,903.58/1,380,131.42
  6. Step 6: Final answer
    x = 611,457.54

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Double scale
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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.