Home / 766,315.87-1,057,515.90-426,784.12

Finding the Fourth Proportional to 766,315.87, 1,057,515.90 and 426,784.12

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Solution

The fourth proportional to 766,315.87, 1,057,515.90 and 426,784.12 is: 588,962.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,315.87 : 1,057,515.90 = 426,784.12 : x
  2. Step 2: Convert to fraction form
    766,315.87/1,057,515.90 = 426,784.12/x
  3. Step 3: Cross multiply
    766,315.87x = 1,057,515.90 × 426,784.12
  4. Step 4: Simplify right side
    766,315.87x = 451,330,987,479.93
  5. Step 5: Solve for x
    x = 451,330,987,479.93/766,315.87
  6. Step 6: Final answer
    x = 588,962.08

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.