Home / 528,664.99-729,538.12-286,942.43

Finding the Fourth Proportional to 528,664.99, 729,538.12 and 286,942.43

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Solution

The fourth proportional to 528,664.99, 729,538.12 and 286,942.43 is: 395,969.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,664.99 : 729,538.12 = 286,942.43 : x
  2. Step 2: Convert to fraction form
    528,664.99/729,538.12 = 286,942.43/x
  3. Step 3: Cross multiply
    528,664.99x = 729,538.12 × 286,942.43
  4. Step 4: Simplify right side
    528,664.99x = 209,335,440,930.43
  5. Step 5: Solve for x
    x = 209,335,440,930.43/528,664.99
  6. Step 6: Final answer
    x = 395,969.93

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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.