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Finding the Fourth Proportional to 606,426.40, 909,639.60 and 382,040.20

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Solution

The fourth proportional to 606,426.40, 909,639.60 and 382,040.20 is: 573,060.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,426.40 : 909,639.60 = 382,040.20 : x
  2. Step 2: Convert to fraction form
    606,426.40/909,639.60 = 382,040.20/x
  3. Step 3: Cross multiply
    606,426.40x = 909,639.60 × 382,040.20
  4. Step 4: Simplify right side
    606,426.40x = 347,518,894,711.92
  5. Step 5: Solve for x
    x = 347,518,894,711.92/606,426.40
  6. Step 6: Final answer
    x = 573,060.30

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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.