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Finding the Fourth Proportional to 562,963.84, 776,697.36 and 321,072.56

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Solution

The fourth proportional to 562,963.84, 776,697.36 and 321,072.56 is: 442,970.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,963.84 : 776,697.36 = 321,072.56 : x
  2. Step 2: Convert to fraction form
    562,963.84/776,697.36 = 321,072.56/x
  3. Step 3: Cross multiply
    562,963.84x = 776,697.36 × 321,072.56
  4. Step 4: Simplify right side
    562,963.84x = 249,376,209,720.44
  5. Step 5: Solve for x
    x = 249,376,209,720.44/562,963.84
  6. Step 6: Final answer
    x = 442,970.21

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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.