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Finding the Fourth Proportional to 654,690.15, 903,368.31 and 368,154.90

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Solution

The fourth proportional to 654,690.15, 903,368.31 and 368,154.90 is: 507,995.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,690.15 : 903,368.31 = 368,154.90 : x
  2. Step 2: Convert to fraction form
    654,690.15/903,368.31 = 368,154.90/x
  3. Step 3: Cross multiply
    654,690.15x = 903,368.31 × 368,154.90
  4. Step 4: Simplify right side
    654,690.15x = 332,579,469,831.22
  5. Step 5: Solve for x
    x = 332,579,469,831.22/654,690.15
  6. Step 6: Final answer
    x = 507,995.22

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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.