Home / 770,403.10-1,155,378.66-290,284.52

Finding the Fourth Proportional to 770,403.10, 1,155,378.66 and 290,284.52

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Solution

The fourth proportional to 770,403.10, 1,155,378.66 and 290,284.52 is: 435,341.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,403.10 : 1,155,378.66 = 290,284.52 : x
  2. Step 2: Convert to fraction form
    770,403.10/1,155,378.66 = 290,284.52/x
  3. Step 3: Cross multiply
    770,403.10x = 1,155,378.66 × 290,284.52
  4. Step 4: Simplify right side
    770,403.10x = 335,388,539,736.34
  5. Step 5: Solve for x
    x = 335,388,539,736.34/770,403.10
  6. Step 6: Final answer
    x = 435,341.63

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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.