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Finding the Fourth Proportional to 528,125.22, 728,807.82 and 286,413.12

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Solution

The fourth proportional to 528,125.22, 728,807.82 and 286,413.12 is: 395,247.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,125.22 : 728,807.82 = 286,413.12 : x
  2. Step 2: Convert to fraction form
    528,125.22/728,807.82 = 286,413.12/x
  3. Step 3: Cross multiply
    528,125.22x = 728,807.82 × 286,413.12
  4. Step 4: Simplify right side
    528,125.22x = 208,740,121,606.60
  5. Step 5: Solve for x
    x = 208,740,121,606.60/528,125.22
  6. Step 6: Final answer
    x = 395,247.40

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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.