Home / 646,673.76-892,445.58-388,629.63

Finding the Fourth Proportional to 646,673.76, 892,445.58 and 388,629.63

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Solution

The fourth proportional to 646,673.76, 892,445.58 and 388,629.63 is: 536,330.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,673.76 : 892,445.58 = 388,629.63 : x
  2. Step 2: Convert to fraction form
    646,673.76/892,445.58 = 388,629.63/x
  3. Step 3: Cross multiply
    646,673.76x = 892,445.58 × 388,629.63
  4. Step 4: Simplify right side
    646,673.76x = 346,830,795,550.54
  5. Step 5: Solve for x
    x = 346,830,795,550.54/646,673.76
  6. Step 6: Final answer
    x = 536,330.40

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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.