Home / 7,182,688.80-9,912,320.87-3,919,713.78

Finding the Fourth Proportional to 7,182,688.80, 9,912,320.87 and 3,919,713.78

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Solution

The fourth proportional to 7,182,688.80, 9,912,320.87 and 3,919,713.78 is: 5,409,319.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,182,688.80 : 9,912,320.87 = 3,919,713.78 : x
  2. Step 2: Convert to fraction form
    7,182,688.80/9,912,320.87 = 3,919,713.78/x
  3. Step 3: Cross multiply
    7,182,688.80x = 9,912,320.87 × 3,919,713.78
  4. Step 4: Simplify right side
    7,182,688.80x = 38,853,460,686,322.02
  5. Step 5: Solve for x
    x = 38,853,460,686,322.02/7,182,688.80
  6. Step 6: Final answer
    x = 5,409,319.79

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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.