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Finding the Fourth Proportional to 528,003.39, 728,644.01 and 286,285.58

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Solution

The fourth proportional to 528,003.39, 728,644.01 and 286,285.58 is: 395,073.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,003.39 : 728,644.01 = 286,285.58 : x
  2. Step 2: Convert to fraction form
    528,003.39/728,644.01 = 286,285.58/x
  3. Step 3: Cross multiply
    528,003.39x = 728,644.01 × 286,285.58
  4. Step 4: Simplify right side
    528,003.39x = 208,600,267,941.73
  5. Step 5: Solve for x
    x = 208,600,267,941.73/528,003.39
  6. Step 6: Final answer
    x = 395,073.73

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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.