Home / 770,403.12-1,155,378.64-290,284.52

Finding the Fourth Proportional to 770,403.12, 1,155,378.64 and 290,284.52

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Solution

The fourth proportional to 770,403.12, 1,155,378.64 and 290,284.52 is: 435,341.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,403.12 : 1,155,378.64 = 290,284.52 : x
  2. Step 2: Convert to fraction form
    770,403.12/1,155,378.64 = 290,284.52/x
  3. Step 3: Cross multiply
    770,403.12x = 1,155,378.64 × 290,284.52
  4. Step 4: Simplify right side
    770,403.12x = 335,388,533,930.65
  5. Step 5: Solve for x
    x = 335,388,533,930.65/770,403.12
  6. Step 6: Final answer
    x = 435,341.61

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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.