Home / 7,182,806.40-9,912,482.16-3,919,831.30

Finding the Fourth Proportional to 7,182,806.40, 9,912,482.16 and 3,919,831.30

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Solution

The fourth proportional to 7,182,806.40, 9,912,482.16 and 3,919,831.30 is: 5,409,481.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,182,806.40 : 9,912,482.16 = 3,919,831.30 : x
  2. Step 2: Convert to fraction form
    7,182,806.40/9,912,482.16 = 3,919,831.30/x
  3. Step 3: Cross multiply
    7,182,806.40x = 9,912,482.16 × 3,919,831.30
  4. Step 4: Simplify right side
    7,182,806.40x = 38,855,257,762,298.04
  5. Step 5: Solve for x
    x = 38,855,257,762,298.04/7,182,806.40
  6. Step 6: Final answer
    x = 5,409,481.42

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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.