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Finding the Fourth Proportional to 850,358, 1,173,391.80 and 487,763.12

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Solution

The fourth proportional to 850,358, 1,173,391.80 and 487,763.12 is: 673,054.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,358 : 1,173,391.80 = 487,763.12 : x
  2. Step 2: Convert to fraction form
    850,358/1,173,391.80 = 487,763.12/x
  3. Step 3: Cross multiply
    850,358x = 1,173,391.80 × 487,763.12
  4. Step 4: Simplify right side
    850,358x = 572,337,245,350.42
  5. Step 5: Solve for x
    x = 572,337,245,350.42/850,358
  6. Step 6: Final answer
    x = 673,054.46

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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.