Home / 771,127.28-1,064,168.80-422,298.35

Finding the Fourth Proportional to 771,127.28, 1,064,168.80 and 422,298.35

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Solution

The fourth proportional to 771,127.28, 1,064,168.80 and 422,298.35 is: 582,778.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,127.28 : 1,064,168.80 = 422,298.35 : x
  2. Step 2: Convert to fraction form
    771,127.28/1,064,168.80 = 422,298.35/x
  3. Step 3: Cross multiply
    771,127.28x = 1,064,168.80 × 422,298.35
  4. Step 4: Simplify right side
    771,127.28x = 449,396,721,984.89
  5. Step 5: Solve for x
    x = 449,396,721,984.89/771,127.28
  6. Step 6: Final answer
    x = 582,778.92

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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.