Home / 1,384,125.21-1,908,900-900,513.90

Finding the Fourth Proportional to 1,384,125.21, 1,908,900 and 900,513.90

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Solution

The fourth proportional to 1,384,125.21, 1,908,900 and 900,513.90 is: 1,241,933.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384,125.21 : 1,908,900 = 900,513.90 : x
  2. Step 2: Convert to fraction form
    1,384,125.21/1,908,900 = 900,513.90/x
  3. Step 3: Cross multiply
    1,384,125.21x = 1,908,900 × 900,513.90
  4. Step 4: Simplify right side
    1,384,125.21x = 1,718,990,983,710
  5. Step 5: Solve for x
    x = 1,718,990,983,710/1,384,125.21
  6. Step 6: Final answer
    x = 1,241,933.15

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1.5x scale

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.