Home / 766,565.76-1,057,986.72-427,143.36

Finding the Fourth Proportional to 766,565.76, 1,057,986.72 and 427,143.36

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Solution

The fourth proportional to 766,565.76, 1,057,986.72 and 427,143.36 is: 589,528.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,565.76 : 1,057,986.72 = 427,143.36 : x
  2. Step 2: Convert to fraction form
    766,565.76/1,057,986.72 = 427,143.36/x
  3. Step 3: Cross multiply
    766,565.76x = 1,057,986.72 × 427,143.36
  4. Step 4: Simplify right side
    766,565.76x = 451,912,002,416.18
  5. Step 5: Solve for x
    x = 451,912,002,416.18/766,565.76
  6. Step 6: Final answer
    x = 589,528.03

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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.