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Finding the Fourth Proportional to 622,387.10, 869,475.70 and 622,387.10

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Solution

The fourth proportional to 622,387.10, 869,475.70 and 622,387.10 is: 869,475.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,387.10 : 869,475.70 = 622,387.10 : x
  2. Step 2: Convert to fraction form
    622,387.10/869,475.70 = 622,387.10/x
  3. Step 3: Cross multiply
    622,387.10x = 869,475.70 × 622,387.10
  4. Step 4: Simplify right side
    622,387.10x = 541,150,459,443.47
  5. Step 5: Solve for x
    x = 541,150,459,443.47/622,387.10
  6. Step 6: Final answer
    x = 869,475.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.