Home / 660,556.08-911,569.14-388,634.22

Finding the Fourth Proportional to 660,556.08, 911,569.14 and 388,634.22

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Solution

The fourth proportional to 660,556.08, 911,569.14 and 388,634.22 is: 536,316.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,556.08 : 911,569.14 = 388,634.22 : x
  2. Step 2: Convert to fraction form
    660,556.08/911,569.14 = 388,634.22/x
  3. Step 3: Cross multiply
    660,556.08x = 911,569.14 × 388,634.22
  4. Step 4: Simplify right side
    660,556.08x = 354,266,961,699.97
  5. Step 5: Solve for x
    x = 354,266,961,699.97/660,556.08
  6. Step 6: Final answer
    x = 536,316.25

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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.