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Finding the Fourth Proportional to 869,865.84, 1,200,424.32 and 482,688

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Solution

The fourth proportional to 869,865.84, 1,200,424.32 and 482,688 is: 666,114.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,865.84 : 1,200,424.32 = 482,688 : x
  2. Step 2: Convert to fraction form
    869,865.84/1,200,424.32 = 482,688/x
  3. Step 3: Cross multiply
    869,865.84x = 1,200,424.32 × 482,688
  4. Step 4: Simplify right side
    869,865.84x = 579,430,414,172.16
  5. Step 5: Solve for x
    x = 579,430,414,172.16/869,865.84
  6. Step 6: Final answer
    x = 666,114.69

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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.