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Finding the Fourth Proportional to 1,319,319, 1,820,660.78 and 746,347

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Solution

The fourth proportional to 1,319,319, 1,820,660.78 and 746,347 is: 1,029,959.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,319 : 1,820,660.78 = 746,347 : x
  2. Step 2: Convert to fraction form
    1,319,319/1,820,660.78 = 746,347/x
  3. Step 3: Cross multiply
    1,319,319x = 1,820,660.78 × 746,347
  4. Step 4: Simplify right side
    1,319,319x = 1,358,844,711,170.66
  5. Step 5: Solve for x
    x = 1,358,844,711,170.66/1,319,319
  6. Step 6: Final answer
    x = 1,029,959.18

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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.