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Finding the Fourth Proportional to 615,580.40, 849,854.28 and 469,237.28

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Solution

The fourth proportional to 615,580.40, 849,854.28 and 469,237.28 is: 647,816.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,580.40 : 849,854.28 = 469,237.28 : x
  2. Step 2: Convert to fraction form
    615,580.40/849,854.28 = 469,237.28/x
  3. Step 3: Cross multiply
    615,580.40x = 849,854.28 × 469,237.28
  4. Step 4: Simplify right side
    615,580.40x = 398,783,310,743.56
  5. Step 5: Solve for x
    x = 398,783,310,743.56/615,580.40
  6. Step 6: Final answer
    x = 647,816.78

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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.