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Finding the Fourth Proportional to 528,098.22, 728,775.93 and 286,380.72

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Solution

The fourth proportional to 528,098.22, 728,775.93 and 286,380.72 is: 395,205.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,098.22 : 728,775.93 = 286,380.72 : x
  2. Step 2: Convert to fraction form
    528,098.22/728,775.93 = 286,380.72/x
  3. Step 3: Cross multiply
    528,098.22x = 728,775.93 × 286,380.72
  4. Step 4: Simplify right side
    528,098.22x = 208,707,375,552.07
  5. Step 5: Solve for x
    x = 208,707,375,552.07/528,098.22
  6. Step 6: Final answer
    x = 395,205.60

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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.