Home / 718,055.63-990,922.82-395,766.53

Finding the Fourth Proportional to 718,055.63, 990,922.82 and 395,766.53

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Solution

The fourth proportional to 718,055.63, 990,922.82 and 395,766.53 is: 546,161.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,055.63 : 990,922.82 = 395,766.53 : x
  2. Step 2: Convert to fraction form
    718,055.63/990,922.82 = 395,766.53/x
  3. Step 3: Cross multiply
    718,055.63x = 990,922.82 × 395,766.53
  4. Step 4: Simplify right side
    718,055.63x = 392,174,085,969.22
  5. Step 5: Solve for x
    x = 392,174,085,969.22/718,055.63
  6. Step 6: Final answer
    x = 546,161.15

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1.5x scale

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.