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Finding the Fourth Proportional to 708,977.05, 978,482.37 and 450,878.38

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Solution

The fourth proportional to 708,977.05, 978,482.37 and 450,878.38 is: 622,271.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,977.05 : 978,482.37 = 450,878.38 : x
  2. Step 2: Convert to fraction form
    708,977.05/978,482.37 = 450,878.38/x
  3. Step 3: Cross multiply
    708,977.05x = 978,482.37 × 450,878.38
  4. Step 4: Simplify right side
    708,977.05x = 441,176,545,844.16
  5. Step 5: Solve for x
    x = 441,176,545,844.16/708,977.05
  6. Step 6: Final answer
    x = 622,271.97

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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.