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Finding the Fourth Proportional to 1,382,894, 1,908,393.72 and 746,990

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Solution

The fourth proportional to 1,382,894, 1,908,393.72 and 746,990 is: 1,030,846.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,894 : 1,908,393.72 = 746,990 : x
  2. Step 2: Convert to fraction form
    1,382,894/1,908,393.72 = 746,990/x
  3. Step 3: Cross multiply
    1,382,894x = 1,908,393.72 × 746,990
  4. Step 4: Simplify right side
    1,382,894x = 1,425,551,024,902.80
  5. Step 5: Solve for x
    x = 1,425,551,024,902.80/1,382,894
  6. Step 6: Final answer
    x = 1,030,846.20

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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.