Home / 858,136.05-1,286,705.59-325,366.45

Finding the Fourth Proportional to 858,136.05, 1,286,705.59 and 325,366.45

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Solution

The fourth proportional to 858,136.05, 1,286,705.59 and 325,366.45 is: 487,860.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,136.05 : 1,286,705.59 = 325,366.45 : x
  2. Step 2: Convert to fraction form
    858,136.05/1,286,705.59 = 325,366.45/x
  3. Step 3: Cross multiply
    858,136.05x = 1,286,705.59 × 325,366.45
  4. Step 4: Simplify right side
    858,136.05x = 418,650,830,013.46
  5. Step 5: Solve for x
    x = 418,650,830,013.46/858,136.05
  6. Step 6: Final answer
    x = 487,860.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.