Home / 2,166,385.76-2,989,715.03-1,306,927.56

Finding the Fourth Proportional to 2,166,385.76, 2,989,715.03 and 1,306,927.56

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Solution

The fourth proportional to 2,166,385.76, 2,989,715.03 and 1,306,927.56 is: 1,803,621.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166,385.76 : 2,989,715.03 = 1,306,927.56 : x
  2. Step 2: Convert to fraction form
    2,166,385.76/2,989,715.03 = 1,306,927.56/x
  3. Step 3: Cross multiply
    2,166,385.76x = 2,989,715.03 × 1,306,927.56
  4. Step 4: Simplify right side
    2,166,385.76x = 3,907,340,969,253.23
  5. Step 5: Solve for x
    x = 3,907,340,969,253.23/2,166,385.76
  6. Step 6: Final answer
    x = 1,803,621.98

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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.