Home / 694,865.70-958,870.08-388,890.45

Finding the Fourth Proportional to 694,865.70, 958,870.08 and 388,890.45

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Solution

The fourth proportional to 694,865.70, 958,870.08 and 388,890.45 is: 536,643.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,865.70 : 958,870.08 = 388,890.45 : x
  2. Step 2: Convert to fraction form
    694,865.70/958,870.08 = 388,890.45/x
  3. Step 3: Cross multiply
    694,865.70x = 958,870.08 × 388,890.45
  4. Step 4: Simplify right side
    694,865.70x = 372,895,416,902.74
  5. Step 5: Solve for x
    x = 372,895,416,902.74/694,865.70
  6. Step 6: Final answer
    x = 536,643.87

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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.