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Finding the Fourth Proportional to 615,689.59, 923,534.33 and 312,036.45

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Solution

The fourth proportional to 615,689.59, 923,534.33 and 312,036.45 is: 468,054.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,689.59 : 923,534.33 = 312,036.45 : x
  2. Step 2: Convert to fraction form
    615,689.59/923,534.33 = 312,036.45/x
  3. Step 3: Cross multiply
    615,689.59x = 923,534.33 × 312,036.45
  4. Step 4: Simplify right side
    615,689.59x = 288,176,373,786.33
  5. Step 5: Solve for x
    x = 288,176,373,786.33/615,689.59
  6. Step 6: Final answer
    x = 468,054.65

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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.