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Finding the Fourth Proportional to 615,066.65, 848,037.87 and 505,789.08

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Solution

The fourth proportional to 615,066.65, 848,037.87 and 505,789.08 is: 697,368.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,066.65 : 848,037.87 = 505,789.08 : x
  2. Step 2: Convert to fraction form
    615,066.65/848,037.87 = 505,789.08/x
  3. Step 3: Cross multiply
    615,066.65x = 848,037.87 × 505,789.08
  4. Step 4: Simplify right side
    615,066.65x = 428,928,294,072.46
  5. Step 5: Solve for x
    x = 428,928,294,072.46/615,066.65
  6. Step 6: Final answer
    x = 697,368.81

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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.