Home / 1,211,465.87-1,671,834.10-667,621.14

Finding the Fourth Proportional to 1,211,465.87, 1,671,834.10 and 667,621.14

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Solution

The fourth proportional to 1,211,465.87, 1,671,834.10 and 667,621.14 is: 921,323.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,465.87 : 1,671,834.10 = 667,621.14 : x
  2. Step 2: Convert to fraction form
    1,211,465.87/1,671,834.10 = 667,621.14/x
  3. Step 3: Cross multiply
    1,211,465.87x = 1,671,834.10 × 667,621.14
  4. Step 4: Simplify right side
    1,211,465.87x = 1,116,151,784,394.77
  5. Step 5: Solve for x
    x = 1,116,151,784,394.77/1,211,465.87
  6. Step 6: Final answer
    x = 921,323.34

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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.