Home / 528,664.80-729,537.88-286,942.16

Finding the Fourth Proportional to 528,664.80, 729,537.88 and 286,942.16

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Solution

The fourth proportional to 528,664.80, 729,537.88 and 286,942.16 is: 395,969.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,664.80 : 729,537.88 = 286,942.16 : x
  2. Step 2: Convert to fraction form
    528,664.80/729,537.88 = 286,942.16/x
  3. Step 3: Cross multiply
    528,664.80x = 729,537.88 × 286,942.16
  4. Step 4: Simplify right side
    528,664.80x = 209,335,175,089.02
  5. Step 5: Solve for x
    x = 209,335,175,089.02/528,664.80
  6. Step 6: Final answer
    x = 395,969.57

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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.