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Finding the Fourth Proportional to 909,908.80, 1,364,863.20 and 833,145.10

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Solution

The fourth proportional to 909,908.80, 1,364,863.20 and 833,145.10 is: 1,249,717.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,908.80 : 1,364,863.20 = 833,145.10 : x
  2. Step 2: Convert to fraction form
    909,908.80/1,364,863.20 = 833,145.10/x
  3. Step 3: Cross multiply
    909,908.80x = 1,364,863.20 × 833,145.10
  4. Step 4: Simplify right side
    909,908.80x = 1,137,129,087,250.32
  5. Step 5: Solve for x
    x = 1,137,129,087,250.32/909,908.80
  6. Step 6: Final answer
    x = 1,249,717.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.