Home / 5,326,009.20-7,989,013.80-2,131,628.40

Finding the Fourth Proportional to 5,326,009.20, 7,989,013.80 and 2,131,628.40

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Solution

The fourth proportional to 5,326,009.20, 7,989,013.80 and 2,131,628.40 is: 3,197,442.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,326,009.20 : 7,989,013.80 = 2,131,628.40 : x
  2. Step 2: Convert to fraction form
    5,326,009.20/7,989,013.80 = 2,131,628.40/x
  3. Step 3: Cross multiply
    5,326,009.20x = 7,989,013.80 × 2,131,628.40
  4. Step 4: Simplify right side
    5,326,009.20x = 17,029,608,704,071.92
  5. Step 5: Solve for x
    x = 17,029,608,704,071.92/5,326,009.20
  6. Step 6: Final answer
    x = 3,197,442.60

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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.