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Finding the Fourth Proportional to 615,487.09, 849,513.90 and 360,920.29

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Solution

The fourth proportional to 615,487.09, 849,513.90 and 360,920.29 is: 498,153.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,487.09 : 849,513.90 = 360,920.29 : x
  2. Step 2: Convert to fraction form
    615,487.09/849,513.90 = 360,920.29/x
  3. Step 3: Cross multiply
    615,487.09x = 849,513.90 × 360,920.29
  4. Step 4: Simplify right side
    615,487.09x = 306,606,802,954.45
  5. Step 5: Solve for x
    x = 306,606,802,954.45/615,487.09
  6. Step 6: Final answer
    x = 498,153.10

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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.