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Finding the Fourth Proportional to 636,284.90, 878,078.88 and 345,897.03

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Solution

The fourth proportional to 636,284.90, 878,078.88 and 345,897.03 is: 477,341.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,284.90 : 878,078.88 = 345,897.03 : x
  2. Step 2: Convert to fraction form
    636,284.90/878,078.88 = 345,897.03/x
  3. Step 3: Cross multiply
    636,284.90x = 878,078.88 × 345,897.03
  4. Step 4: Simplify right side
    636,284.90x = 303,724,879,990.52
  5. Step 5: Solve for x
    x = 303,724,879,990.52/636,284.90
  6. Step 6: Final answer
    x = 477,341.01

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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.