Home / 528,668.07-729,542.40-286,945.54

Finding the Fourth Proportional to 528,668.07, 729,542.40 and 286,945.54

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Solution

The fourth proportional to 528,668.07, 729,542.40 and 286,945.54 is: 395,974.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,668.07 : 729,542.40 = 286,945.54 : x
  2. Step 2: Convert to fraction form
    528,668.07/729,542.40 = 286,945.54/x
  3. Step 3: Cross multiply
    528,668.07x = 729,542.40 × 286,945.54
  4. Step 4: Simplify right side
    528,668.07x = 209,338,935,020.99
  5. Step 5: Solve for x
    x = 209,338,935,020.99/528,668.07
  6. Step 6: Final answer
    x = 395,974.24

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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.