Home / 1,643,539.42-2,268,040.87-918,393.11

Finding the Fourth Proportional to 1,643,539.42, 2,268,040.87 and 918,393.11

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Solution

The fourth proportional to 1,643,539.42, 2,268,040.87 and 918,393.11 is: 1,267,358.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,643,539.42 : 2,268,040.87 = 918,393.11 : x
  2. Step 2: Convert to fraction form
    1,643,539.42/2,268,040.87 = 918,393.11/x
  3. Step 3: Cross multiply
    1,643,539.42x = 2,268,040.87 × 918,393.11
  4. Step 4: Simplify right side
    1,643,539.42x = 2,082,953,108,206.41
  5. Step 5: Solve for x
    x = 2,082,953,108,206.41/1,643,539.42
  6. Step 6: Final answer
    x = 1,267,358.17

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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.