Home / 920,735.42-1,270,678.68-558,174.56

Finding the Fourth Proportional to 920,735.42, 1,270,678.68 and 558,174.56

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Solution

The fourth proportional to 920,735.42, 1,270,678.68 and 558,174.56 is: 770,319.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,735.42 : 1,270,678.68 = 558,174.56 : x
  2. Step 2: Convert to fraction form
    920,735.42/1,270,678.68 = 558,174.56/x
  3. Step 3: Cross multiply
    920,735.42x = 1,270,678.68 × 558,174.56
  4. Step 4: Simplify right side
    920,735.42x = 709,260,516,287.08
  5. Step 5: Solve for x
    x = 709,260,516,287.08/920,735.42
  6. Step 6: Final answer
    x = 770,319.57

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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.