Home / 1,643,554.40-2,268,061.55-918,408.08

Finding the Fourth Proportional to 1,643,554.40, 2,268,061.55 and 918,408.08

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Solution

The fourth proportional to 1,643,554.40, 2,268,061.55 and 918,408.08 is: 1,267,378.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,643,554.40 : 2,268,061.55 = 918,408.08 : x
  2. Step 2: Convert to fraction form
    1,643,554.40/2,268,061.55 = 918,408.08/x
  3. Step 3: Cross multiply
    1,643,554.40x = 2,268,061.55 × 918,408.08
  4. Step 4: Simplify right side
    1,643,554.40x = 2,083,006,037,524.98
  5. Step 5: Solve for x
    x = 2,083,006,037,524.98/1,643,554.40
  6. Step 6: Final answer
    x = 1,267,378.82

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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.