Home / 771,118.28-1,064,143.10-431,586.56

Finding the Fourth Proportional to 771,118.28, 1,064,143.10 and 431,586.56

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Solution

The fourth proportional to 771,118.28, 1,064,143.10 and 431,586.56 is: 595,589.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,118.28 : 1,064,143.10 = 431,586.56 : x
  2. Step 2: Convert to fraction form
    771,118.28/1,064,143.10 = 431,586.56/x
  3. Step 3: Cross multiply
    771,118.28x = 1,064,143.10 × 431,586.56
  4. Step 4: Simplify right side
    771,118.28x = 459,269,859,876.74
  5. Step 5: Solve for x
    x = 459,269,859,876.74/771,118.28
  6. Step 6: Final answer
    x = 595,589.38

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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.