Home / 809,653.69-1,117,420.61-470,121.94

Finding the Fourth Proportional to 809,653.69, 1,117,420.61 and 470,121.94

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Solution

The fourth proportional to 809,653.69, 1,117,420.61 and 470,121.94 is: 648,825.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,653.69 : 1,117,420.61 = 470,121.94 : x
  2. Step 2: Convert to fraction form
    809,653.69/1,117,420.61 = 470,121.94/x
  3. Step 3: Cross multiply
    809,653.69x = 1,117,420.61 × 470,121.94
  4. Step 4: Simplify right side
    809,653.69x = 525,323,944,969.18
  5. Step 5: Solve for x
    x = 525,323,944,969.18/809,653.69
  6. Step 6: Final answer
    x = 648,825.48

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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.