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Finding the Fourth Proportional to 864,940.80, 1,294,300.80 and 585,004.80

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Solution

The fourth proportional to 864,940.80, 1,294,300.80 and 585,004.80 is: 875,403.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,940.80 : 1,294,300.80 = 585,004.80 : x
  2. Step 2: Convert to fraction form
    864,940.80/1,294,300.80 = 585,004.80/x
  3. Step 3: Cross multiply
    864,940.80x = 1,294,300.80 × 585,004.80
  4. Step 4: Simplify right side
    864,940.80x = 757,172,180,643.84
  5. Step 5: Solve for x
    x = 757,172,180,643.84/864,940.80
  6. Step 6: Final answer
    x = 875,403.47

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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.