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Finding the Fourth Proportional to 654,683.76, 903,390 and 368,197.68

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Solution

The fourth proportional to 654,683.76, 903,390 and 368,197.68 is: 508,071.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,683.76 : 903,390 = 368,197.68 : x
  2. Step 2: Convert to fraction form
    654,683.76/903,390 = 368,197.68/x
  3. Step 3: Cross multiply
    654,683.76x = 903,390 × 368,197.68
  4. Step 4: Simplify right side
    654,683.76x = 332,626,102,135.20
  5. Step 5: Solve for x
    x = 332,626,102,135.20/654,683.76
  6. Step 6: Final answer
    x = 508,071.41

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1.5x scale

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.