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Finding the Fourth Proportional to 7,319,040.90, 10,978,561.35 and 2,000,256.90

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Solution

The fourth proportional to 7,319,040.90, 10,978,561.35 and 2,000,256.90 is: 3,000,385.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,319,040.90 : 10,978,561.35 = 2,000,256.90 : x
  2. Step 2: Convert to fraction form
    7,319,040.90/10,978,561.35 = 2,000,256.90/x
  3. Step 3: Cross multiply
    7,319,040.90x = 10,978,561.35 × 2,000,256.90
  4. Step 4: Simplify right side
    7,319,040.90x = 21,959,943,092,410.81
  5. Step 5: Solve for x
    x = 21,959,943,092,410.81/7,319,040.90
  6. Step 6: Final answer
    x = 3,000,385.35

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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.