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Finding the Fourth Proportional to 603,119.80, 903,642.90 and 392,649.40

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Solution

The fourth proportional to 603,119.80, 903,642.90 and 392,649.40 is: 588,299.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,119.80 : 903,642.90 = 392,649.40 : x
  2. Step 2: Convert to fraction form
    603,119.80/903,642.90 = 392,649.40/x
  3. Step 3: Cross multiply
    603,119.80x = 903,642.90 × 392,649.40
  4. Step 4: Simplify right side
    603,119.80x = 354,814,842,499.26
  5. Step 5: Solve for x
    x = 354,814,842,499.26/603,119.80
  6. Step 6: Final answer
    x = 588,299.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.