Home / 784,138.40-1,082,354.64-623,278.88

Finding the Fourth Proportional to 784,138.40, 1,082,354.64 and 623,278.88

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Solution

The fourth proportional to 784,138.40, 1,082,354.64 and 623,278.88 is: 860,318.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,138.40 : 1,082,354.64 = 623,278.88 : x
  2. Step 2: Convert to fraction form
    784,138.40/1,082,354.64 = 623,278.88/x
  3. Step 3: Cross multiply
    784,138.40x = 1,082,354.64 × 623,278.88
  4. Step 4: Simplify right side
    784,138.40x = 674,608,787,782.00
  5. Step 5: Solve for x
    x = 674,608,787,782.00/784,138.40
  6. Step 6: Final answer
    x = 860,318.52

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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.