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Finding the Fourth Proportional to 923,952.79, 1,385,978.87 and 292,915.81

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Solution

The fourth proportional to 923,952.79, 1,385,978.87 and 292,915.81 is: 439,389.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    923,952.79 : 1,385,978.87 = 292,915.81 : x
  2. Step 2: Convert to fraction form
    923,952.79/1,385,978.87 = 292,915.81/x
  3. Step 3: Cross multiply
    923,952.79x = 1,385,978.87 × 292,915.81
  4. Step 4: Simplify right side
    923,952.79x = 405,975,121,884.36
  5. Step 5: Solve for x
    x = 405,975,121,884.36/923,952.79
  6. Step 6: Final answer
    x = 439,389.46

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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.