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Finding the Fourth Proportional to 615,690.59, 923,535.83 and 312,037.45

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Solution

The fourth proportional to 615,690.59, 923,535.83 and 312,037.45 is: 468,056.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,690.59 : 923,535.83 = 312,037.45 : x
  2. Step 2: Convert to fraction form
    615,690.59/923,535.83 = 312,037.45/x
  3. Step 3: Cross multiply
    615,690.59x = 923,535.83 × 312,037.45
  4. Step 4: Simplify right side
    615,690.59x = 288,177,765,376.83
  5. Step 5: Solve for x
    x = 288,177,765,376.83/615,690.59
  6. Step 6: Final answer
    x = 468,056.15

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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.