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Finding the Fourth Proportional to 1,714,836.95, 2,366,304.44 and 989,918.20

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Solution

The fourth proportional to 1,714,836.95, 2,366,304.44 and 989,918.20 is: 1,365,988.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,714,836.95 : 2,366,304.44 = 989,918.20 : x
  2. Step 2: Convert to fraction form
    1,714,836.95/2,366,304.44 = 989,918.20/x
  3. Step 3: Cross multiply
    1,714,836.95x = 2,366,304.44 × 989,918.20
  4. Step 4: Simplify right side
    1,714,836.95x = 2,342,447,821,031.46
  5. Step 5: Solve for x
    x = 2,342,447,821,031.46/1,714,836.95
  6. Step 6: Final answer
    x = 1,365,988.66

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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.