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Finding the Fourth Proportional to 654,691.15, 903,369.69 and 368,155.90

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Solution

The fourth proportional to 654,691.15, 903,369.69 and 368,155.90 is: 507,996.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,691.15 : 903,369.69 = 368,155.90 : x
  2. Step 2: Convert to fraction form
    654,691.15/903,369.69 = 368,155.90/x
  3. Step 3: Cross multiply
    654,691.15x = 903,369.69 × 368,155.90
  4. Step 4: Simplify right side
    654,691.15x = 332,580,881,254.67
  5. Step 5: Solve for x
    x = 332,580,881,254.67/654,691.15
  6. Step 6: Final answer
    x = 507,996.60

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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.