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Finding the Fourth Proportional to 484,718.82, 668,810.58 and 280,696.32

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Solution

The fourth proportional to 484,718.82, 668,810.58 and 280,696.32 is: 387,302.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,718.82 : 668,810.58 = 280,696.32 : x
  2. Step 2: Convert to fraction form
    484,718.82/668,810.58 = 280,696.32/x
  3. Step 3: Cross multiply
    484,718.82x = 668,810.58 × 280,696.32
  4. Step 4: Simplify right side
    484,718.82x = 187,732,668,583.07
  5. Step 5: Solve for x
    x = 187,732,668,583.07/484,718.82
  6. Step 6: Final answer
    x = 387,302.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.