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Finding the Fourth Proportional to 528,249.82, 728,980.44 and 286,531.78

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Solution

The fourth proportional to 528,249.82, 728,980.44 and 286,531.78 is: 395,411.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,249.82 : 728,980.44 = 286,531.78 : x
  2. Step 2: Convert to fraction form
    528,249.82/728,980.44 = 286,531.78/x
  3. Step 3: Cross multiply
    528,249.82x = 728,980.44 × 286,531.78
  4. Step 4: Simplify right side
    528,249.82x = 208,876,063,058.38
  5. Step 5: Solve for x
    x = 208,876,063,058.38/528,249.82
  6. Step 6: Final answer
    x = 395,411.52

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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.