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Finding the Fourth Proportional to 1,984,384.80, 2,977,268.40 and 863,258.40

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Solution

The fourth proportional to 1,984,384.80, 2,977,268.40 and 863,258.40 is: 1,295,188.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984,384.80 : 2,977,268.40 = 863,258.40 : x
  2. Step 2: Convert to fraction form
    1,984,384.80/2,977,268.40 = 863,258.40/x
  3. Step 3: Cross multiply
    1,984,384.80x = 2,977,268.40 × 863,258.40
  4. Step 4: Simplify right side
    1,984,384.80x = 2,570,151,955,354.56
  5. Step 5: Solve for x
    x = 2,570,151,955,354.56/1,984,384.80
  6. Step 6: Final answer
    x = 1,295,188.29

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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.