Home / 771,128.28-1,064,156.90-431,596.60

Finding the Fourth Proportional to 771,128.28, 1,064,156.90 and 431,596.60

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Solution

The fourth proportional to 771,128.28, 1,064,156.90 and 431,596.60 is: 595,603.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,128.28 : 1,064,156.90 = 431,596.60 : x
  2. Step 2: Convert to fraction form
    771,128.28/1,064,156.90 = 431,596.60/x
  3. Step 3: Cross multiply
    771,128.28x = 1,064,156.90 × 431,596.60
  4. Step 4: Simplify right side
    771,128.28x = 459,286,499,906.54
  5. Step 5: Solve for x
    x = 459,286,499,906.54/771,128.28
  6. Step 6: Final answer
    x = 595,603.24

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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.