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Finding the Fourth Proportional to 615,599.84, 849,881.22 and 469,256.78

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Solution

The fourth proportional to 615,599.84, 849,881.22 and 469,256.78 is: 647,843.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,599.84 : 849,881.22 = 469,256.78 : x
  2. Step 2: Convert to fraction form
    615,599.84/849,881.22 = 469,256.78/x
  3. Step 3: Cross multiply
    615,599.84x = 849,881.22 × 469,256.78
  4. Step 4: Simplify right side
    615,599.84x = 398,812,524,679.67
  5. Step 5: Solve for x
    x = 398,812,524,679.67/615,599.84
  6. Step 6: Final answer
    x = 647,843.78

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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.