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Finding the Fourth Proportional to 6,652,865.76, 9,980,529.36 and 2,105,059.52

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Solution

The fourth proportional to 6,652,865.76, 9,980,529.36 and 2,105,059.52 is: 3,157,978.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,652,865.76 : 9,980,529.36 = 2,105,059.52 : x
  2. Step 2: Convert to fraction form
    6,652,865.76/9,980,529.36 = 2,105,059.52/x
  3. Step 3: Cross multiply
    6,652,865.76x = 9,980,529.36 × 2,105,059.52
  4. Step 4: Simplify right side
    6,652,865.76x = 21,009,608,343,907.51
  5. Step 5: Solve for x
    x = 21,009,608,343,907.51/6,652,865.76
  6. Step 6: Final answer
    x = 3,157,978.70

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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.