Home / 999,296.46-1,378,641.87-636,655.41

Finding the Fourth Proportional to 999,296.46, 1,378,641.87 and 636,655.41

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Solution

The fourth proportional to 999,296.46, 1,378,641.87 and 636,655.41 is: 878,337.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,296.46 : 1,378,641.87 = 636,655.41 : x
  2. Step 2: Convert to fraction form
    999,296.46/1,378,641.87 = 636,655.41/x
  3. Step 3: Cross multiply
    999,296.46x = 1,378,641.87 × 636,655.41
  4. Step 4: Simplify right side
    999,296.46x = 877,719,804,988.02
  5. Step 5: Solve for x
    x = 877,719,804,988.02/999,296.46
  6. Step 6: Final answer
    x = 878,337.75

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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.