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Finding the Fourth Proportional to 7,581,642.86, 10,462,512.80 and 4,143,908.49

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Solution

The fourth proportional to 7,581,642.86, 10,462,512.80 and 4,143,908.49 is: 5,718,509.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,581,642.86 : 10,462,512.80 = 4,143,908.49 : x
  2. Step 2: Convert to fraction form
    7,581,642.86/10,462,512.80 = 4,143,908.49/x
  3. Step 3: Cross multiply
    7,581,642.86x = 10,462,512.80 × 4,143,908.49
  4. Step 4: Simplify right side
    7,581,642.86x = 43,355,695,597,934.13
  5. Step 5: Solve for x
    x = 43,355,695,597,934.13/7,581,642.86
  6. Step 6: Final answer
    x = 5,718,509.36

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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.