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Finding the Fourth Proportional to 528,251.32, 728,982.51 and 286,533.28

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Solution

The fourth proportional to 528,251.32, 728,982.51 and 286,533.28 is: 395,413.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,251.32 : 728,982.51 = 286,533.28 : x
  2. Step 2: Convert to fraction form
    528,251.32/728,982.51 = 286,533.28/x
  3. Step 3: Cross multiply
    528,251.32x = 728,982.51 × 286,533.28
  4. Step 4: Simplify right side
    528,251.32x = 208,877,749,652.93
  5. Step 5: Solve for x
    x = 208,877,749,652.93/528,251.32
  6. Step 6: Final answer
    x = 395,413.59

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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.