Home / 636,291,908.70-878,069,064.22-368,379,037.79

Finding the Fourth Proportional to 636,291,908.70, 878,069,064.22 and 368,379,037.79

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Solution

The fourth proportional to 636,291,908.70, 878,069,064.22 and 368,379,037.79 is: 508,355,100.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,291,908.70 : 878,069,064.22 = 368,379,037.79 : x
  2. Step 2: Convert to fraction form
    636,291,908.70/878,069,064.22 = 368,379,037.79/x
  3. Step 3: Cross multiply
    636,291,908.70x = 878,069,064.22 × 368,379,037.79
  4. Step 4: Simplify right side
    636,291,908.70x = 323,462,236,986,139,008
  5. Step 5: Solve for x
    x = 323,462,236,986,139,008/636,291,908.70
  6. Step 6: Final answer
    x = 508,355,100.18

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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.