Home / 2,172,359.40-2,997,657.34-1,289,156.54

Finding the Fourth Proportional to 2,172,359.40, 2,997,657.34 and 1,289,156.54

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Solution

The fourth proportional to 2,172,359.40, 2,997,657.34 and 1,289,156.54 is: 1,778,918.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172,359.40 : 2,997,657.34 = 1,289,156.54 : x
  2. Step 2: Convert to fraction form
    2,172,359.40/2,997,657.34 = 1,289,156.54/x
  3. Step 3: Cross multiply
    2,172,359.40x = 2,997,657.34 × 1,289,156.54
  4. Step 4: Simplify right side
    2,172,359.40x = 3,864,449,558,385.92
  5. Step 5: Solve for x
    x = 3,864,449,558,385.92/2,172,359.40
  6. Step 6: Final answer
    x = 1,778,918.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.