Home / 528,945.66-729,929.07-287,223.84

Finding the Fourth Proportional to 528,945.66, 729,929.07 and 287,223.84

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Solution

The fourth proportional to 528,945.66, 729,929.07 and 287,223.84 is: 396,360.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,945.66 : 729,929.07 = 287,223.84 : x
  2. Step 2: Convert to fraction form
    528,945.66/729,929.07 = 287,223.84/x
  3. Step 3: Cross multiply
    528,945.66x = 729,929.07 × 287,223.84
  4. Step 4: Simplify right side
    528,945.66x = 209,653,030,413.03
  5. Step 5: Solve for x
    x = 209,653,030,413.03/528,945.66
  6. Step 6: Final answer
    x = 396,360.24

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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.