Home / 528,687.90-729,569.79-286,965.36

Finding the Fourth Proportional to 528,687.90, 729,569.79 and 286,965.36

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Solution

The fourth proportional to 528,687.90, 729,569.79 and 286,965.36 is: 396,001.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,687.90 : 729,569.79 = 286,965.36 : x
  2. Step 2: Convert to fraction form
    528,687.90/729,569.79 = 286,965.36/x
  3. Step 3: Cross multiply
    528,687.90x = 729,569.79 × 286,965.36
  4. Step 4: Simplify right side
    528,687.90x = 209,361,257,432.47
  5. Step 5: Solve for x
    x = 209,361,257,432.47/528,687.90
  6. Step 6: Final answer
    x = 396,001.61

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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.