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Finding the Fourth Proportional to 654,903.40, 903,757.08 and 368,423.68

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Solution

The fourth proportional to 654,903.40, 903,757.08 and 368,423.68 is: 508,419.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,903.40 : 903,757.08 = 368,423.68 : x
  2. Step 2: Convert to fraction form
    654,903.40/903,757.08 = 368,423.68/x
  3. Step 3: Cross multiply
    654,903.40x = 903,757.08 × 368,423.68
  4. Step 4: Simplify right side
    654,903.40x = 332,965,509,239.65
  5. Step 5: Solve for x
    x = 332,965,509,239.65/654,903.40
  6. Step 6: Final answer
    x = 508,419.27

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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.