Home / 528,621.57-729,504.77-286,907.04

Finding the Fourth Proportional to 528,621.57, 729,504.77 and 286,907.04

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Solution

The fourth proportional to 528,621.57, 729,504.77 and 286,907.04 is: 395,935.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,621.57 : 729,504.77 = 286,907.04 : x
  2. Step 2: Convert to fraction form
    528,621.57/729,504.77 = 286,907.04/x
  3. Step 3: Cross multiply
    528,621.57x = 729,504.77 × 286,907.04
  4. Step 4: Simplify right side
    528,621.57x = 209,300,052,792.05
  5. Step 5: Solve for x
    x = 209,300,052,792.05/528,621.57
  6. Step 6: Final answer
    x = 395,935.51

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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.