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Finding the Fourth Proportional to 615,244.80, 922,867.20 and 511,564.80

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Solution

The fourth proportional to 615,244.80, 922,867.20 and 511,564.80 is: 767,347.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,244.80 : 922,867.20 = 511,564.80 : x
  2. Step 2: Convert to fraction form
    615,244.80/922,867.20 = 511,564.80/x
  3. Step 3: Cross multiply
    615,244.80x = 922,867.20 × 511,564.80
  4. Step 4: Simplify right side
    615,244.80x = 472,106,374,594.56
  5. Step 5: Solve for x
    x = 472,106,374,594.56/615,244.80
  6. Step 6: Final answer
    x = 767,347.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.