Home / 1,643,538.42-2,268,039.49-918,392.11

Finding the Fourth Proportional to 1,643,538.42, 2,268,039.49 and 918,392.11

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Solution

The fourth proportional to 1,643,538.42, 2,268,039.49 and 918,392.11 is: 1,267,356.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,643,538.42 : 2,268,039.49 = 918,392.11 : x
  2. Step 2: Convert to fraction form
    1,643,538.42/2,268,039.49 = 918,392.11/x
  3. Step 3: Cross multiply
    1,643,538.42x = 2,268,039.49 × 918,392.11
  4. Step 4: Simplify right side
    1,643,538.42x = 2,082,949,564,818.34
  5. Step 5: Solve for x
    x = 2,082,949,564,818.34/1,643,538.42
  6. Step 6: Final answer
    x = 1,267,356.78

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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.