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Finding the Fourth Proportional to 615,433.88, 922,804.54 and 423,533.72

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Solution

The fourth proportional to 615,433.88, 922,804.54 and 423,533.72 is: 635,062.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,433.88 : 922,804.54 = 423,533.72 : x
  2. Step 2: Convert to fraction form
    615,433.88/922,804.54 = 423,533.72/x
  3. Step 3: Cross multiply
    615,433.88x = 922,804.54 × 423,533.72
  4. Step 4: Simplify right side
    615,433.88x = 390,838,839,659.09
  5. Step 5: Solve for x
    x = 390,838,839,659.09/615,433.88
  6. Step 6: Final answer
    x = 635,062.27

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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.