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Finding the Fourth Proportional to 923,940, 1,275,037.20 and 500,004

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Solution

The fourth proportional to 923,940, 1,275,037.20 and 500,004 is: 690,005.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    923,940 : 1,275,037.20 = 500,004 : x
  2. Step 2: Convert to fraction form
    923,940/1,275,037.20 = 500,004/x
  3. Step 3: Cross multiply
    923,940x = 1,275,037.20 × 500,004
  4. Step 4: Simplify right side
    923,940x = 637,523,700,148.80
  5. Step 5: Solve for x
    x = 637,523,700,148.80/923,940
  6. Step 6: Final answer
    x = 690,005.52

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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.