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Finding the Fourth Proportional to 770,070, 1,155,571.56 and 326,838

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Solution

The fourth proportional to 770,070, 1,155,571.56 and 326,838 is: 490,455.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,070 : 1,155,571.56 = 326,838 : x
  2. Step 2: Convert to fraction form
    770,070/1,155,571.56 = 326,838/x
  3. Step 3: Cross multiply
    770,070x = 1,155,571.56 × 326,838
  4. Step 4: Simplify right side
    770,070x = 377,684,697,527.28
  5. Step 5: Solve for x
    x = 377,684,697,527.28/770,070
  6. Step 6: Final answer
    x = 490,455.02

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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.