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Finding the Fourth Proportional to 636,867.08, 878,878.15 and 350,405.00

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Solution

The fourth proportional to 636,867.08, 878,878.15 and 350,405.00 is: 483,559.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,867.08 : 878,878.15 = 350,405.00 : x
  2. Step 2: Convert to fraction form
    636,867.08/878,878.15 = 350,405.00/x
  3. Step 3: Cross multiply
    636,867.08x = 878,878.15 × 350,405.00
  4. Step 4: Simplify right side
    636,867.08x = 307,963,292,880.35
  5. Step 5: Solve for x
    x = 307,963,292,880.35/636,867.08
  6. Step 6: Final answer
    x = 483,559.76

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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.