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Finding the Fourth Proportional to 1,792,643.10, 2,688,964.65 and 1,643,343.90

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Solution

The fourth proportional to 1,792,643.10, 2,688,964.65 and 1,643,343.90 is: 2,465,015.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,792,643.10 : 2,688,964.65 = 1,643,343.90 : x
  2. Step 2: Convert to fraction form
    1,792,643.10/2,688,964.65 = 1,643,343.90/x
  3. Step 3: Cross multiply
    1,792,643.10x = 2,688,964.65 × 1,643,343.90
  4. Step 4: Simplify right side
    1,792,643.10x = 4,418,893,654,893.14
  5. Step 5: Solve for x
    x = 4,418,893,654,893.14/1,792,643.10
  6. Step 6: Final answer
    x = 2,465,015.85

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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.