Home / 918,339.80-1,377,509.70-664,429.10

Finding the Fourth Proportional to 918,339.80, 1,377,509.70 and 664,429.10

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Solution

The fourth proportional to 918,339.80, 1,377,509.70 and 664,429.10 is: 996,643.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,339.80 : 1,377,509.70 = 664,429.10 : x
  2. Step 2: Convert to fraction form
    918,339.80/1,377,509.70 = 664,429.10/x
  3. Step 3: Cross multiply
    918,339.80x = 1,377,509.70 × 664,429.10
  4. Step 4: Simplify right side
    918,339.80x = 915,257,530,212.27
  5. Step 5: Solve for x
    x = 915,257,530,212.27/918,339.80
  6. Step 6: Final answer
    x = 996,643.65

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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.