Home / 694,665.42-958,678.68-388,739.16

Finding the Fourth Proportional to 694,665.42, 958,678.68 and 388,739.16

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Solution

The fourth proportional to 694,665.42, 958,678.68 and 388,739.16 is: 536,482.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,665.42 : 958,678.68 = 388,739.16 : x
  2. Step 2: Convert to fraction form
    694,665.42/958,678.68 = 388,739.16/x
  3. Step 3: Cross multiply
    694,665.42x = 958,678.68 × 388,739.16
  4. Step 4: Simplify right side
    694,665.42x = 372,675,944,773.11
  5. Step 5: Solve for x
    x = 372,675,944,773.11/694,665.42
  6. Step 6: Final answer
    x = 536,482.65

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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.