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Finding the Fourth Proportional to 2,652,603.20, 3,978,904.80 and 879,675.20

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Solution

The fourth proportional to 2,652,603.20, 3,978,904.80 and 879,675.20 is: 1,319,512.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,652,603.20 : 3,978,904.80 = 879,675.20 : x
  2. Step 2: Convert to fraction form
    2,652,603.20/3,978,904.80 = 879,675.20/x
  3. Step 3: Cross multiply
    2,652,603.20x = 3,978,904.80 × 879,675.20
  4. Step 4: Simplify right side
    2,652,603.20x = 3,500,143,875,720.96
  5. Step 5: Solve for x
    x = 3,500,143,875,720.96/2,652,603.20
  6. Step 6: Final answer
    x = 1,319,512.80

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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.