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Finding the Fourth Proportional to 891,662.60, 1,337,688.30 and 292,521.80

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Solution

The fourth proportional to 891,662.60, 1,337,688.30 and 292,521.80 is: 438,846.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,662.60 : 1,337,688.30 = 292,521.80 : x
  2. Step 2: Convert to fraction form
    891,662.60/1,337,688.30 = 292,521.80/x
  3. Step 3: Cross multiply
    891,662.60x = 1,337,688.30 × 292,521.80
  4. Step 4: Simplify right side
    891,662.60x = 391,302,989,354.94
  5. Step 5: Solve for x
    x = 391,302,989,354.94/891,662.60
  6. Step 6: Final answer
    x = 438,846.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.