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Finding the Fourth Proportional to 603,838.40, 906,340.80 and 367,642.40

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Solution

The fourth proportional to 603,838.40, 906,340.80 and 367,642.40 is: 551,818.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,838.40 : 906,340.80 = 367,642.40 : x
  2. Step 2: Convert to fraction form
    603,838.40/906,340.80 = 367,642.40/x
  3. Step 3: Cross multiply
    603,838.40x = 906,340.80 × 367,642.40
  4. Step 4: Simplify right side
    603,838.40x = 333,209,306,929.92
  5. Step 5: Solve for x
    x = 333,209,306,929.92/603,838.40
  6. Step 6: Final answer
    x = 551,818.68

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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.