Home / 7,182,813.30-9,912,491.64-3,919,838.16

Finding the Fourth Proportional to 7,182,813.30, 9,912,491.64 and 3,919,838.16

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Solution

The fourth proportional to 7,182,813.30, 9,912,491.64 and 3,919,838.16 is: 5,409,490.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,182,813.30 : 9,912,491.64 = 3,919,838.16 : x
  2. Step 2: Convert to fraction form
    7,182,813.30/9,912,491.64 = 3,919,838.16/x
  3. Step 3: Cross multiply
    7,182,813.30x = 9,912,491.64 × 3,919,838.16
  4. Step 4: Simplify right side
    7,182,813.30x = 38,855,362,991,152.98
  5. Step 5: Solve for x
    x = 38,855,362,991,152.98/7,182,813.30
  6. Step 6: Final answer
    x = 5,409,490.87

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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.