Home / 690,771.80-953,313.90-384,868.28

Finding the Fourth Proportional to 690,771.80, 953,313.90 and 384,868.28

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Solution

The fourth proportional to 690,771.80, 953,313.90 and 384,868.28 is: 531,145.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,771.80 : 953,313.90 = 384,868.28 : x
  2. Step 2: Convert to fraction form
    690,771.80/953,313.90 = 384,868.28/x
  3. Step 3: Cross multiply
    690,771.80x = 953,313.90 × 384,868.28
  4. Step 4: Simplify right side
    690,771.80x = 366,900,280,993.09
  5. Step 5: Solve for x
    x = 366,900,280,993.09/690,771.80
  6. Step 6: Final answer
    x = 531,145.42

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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.