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Finding the Fourth Proportional to 1,173,174, 1,618,980.12 and 636,630

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Solution

The fourth proportional to 1,173,174, 1,618,980.12 and 636,630 is: 878,549.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,173,174 : 1,618,980.12 = 636,630 : x
  2. Step 2: Convert to fraction form
    1,173,174/1,618,980.12 = 636,630/x
  3. Step 3: Cross multiply
    1,173,174x = 1,618,980.12 × 636,630
  4. Step 4: Simplify right side
    1,173,174x = 1,030,691,313,795.60
  5. Step 5: Solve for x
    x = 1,030,691,313,795.60/1,173,174
  6. Step 6: Final answer
    x = 878,549.40

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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.