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Finding the Fourth Proportional to 615,609.42, 849,894.39 and 469,266.54

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Solution

The fourth proportional to 615,609.42, 849,894.39 and 469,266.54 is: 647,857.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,609.42 : 849,894.39 = 469,266.54 : x
  2. Step 2: Convert to fraction form
    615,609.42/849,894.39 = 469,266.54/x
  3. Step 3: Cross multiply
    615,609.42x = 849,894.39 × 469,266.54
  4. Step 4: Simplify right side
    615,609.42x = 398,826,999,760.71
  5. Step 5: Solve for x
    x = 398,826,999,760.71/615,609.42
  6. Step 6: Final answer
    x = 647,857.21

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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.