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Finding the Fourth Proportional to 1,653,969.60, 2,480,954.40 and 1,639,972.80

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Solution

The fourth proportional to 1,653,969.60, 2,480,954.40 and 1,639,972.80 is: 2,459,959.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,653,969.60 : 2,480,954.40 = 1,639,972.80 : x
  2. Step 2: Convert to fraction form
    1,653,969.60/2,480,954.40 = 1,639,972.80/x
  3. Step 3: Cross multiply
    1,653,969.60x = 2,480,954.40 × 1,639,972.80
  4. Step 4: Simplify right side
    1,653,969.60x = 4,068,697,734,040.32
  5. Step 5: Solve for x
    x = 4,068,697,734,040.32/1,653,969.60
  6. Step 6: Final answer
    x = 2,459,959.20

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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.