Home / 918,715.30-1,378,352.70-469,751.54

Finding the Fourth Proportional to 918,715.30, 1,378,352.70 and 469,751.54

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Solution

The fourth proportional to 918,715.30, 1,378,352.70 and 469,751.54 is: 704,770.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,715.30 : 1,378,352.70 = 469,751.54 : x
  2. Step 2: Convert to fraction form
    918,715.30/1,378,352.70 = 469,751.54/x
  3. Step 3: Cross multiply
    918,715.30x = 1,378,352.70 × 469,751.54
  4. Step 4: Simplify right side
    918,715.30x = 647,483,296,596.39
  5. Step 5: Solve for x
    x = 647,483,296,596.39/918,715.30
  6. Step 6: Final answer
    x = 704,770.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.