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Finding the Fourth Proportional to 528,365.67, 729,146.03 and 286,648.24

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Solution

The fourth proportional to 528,365.67, 729,146.03 and 286,648.24 is: 395,575.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,365.67 : 729,146.03 = 286,648.24 : x
  2. Step 2: Convert to fraction form
    528,365.67/729,146.03 = 286,648.24/x
  3. Step 3: Cross multiply
    528,365.67x = 729,146.03 × 286,648.24
  4. Step 4: Simplify right side
    528,365.67x = 209,008,427,170.45
  5. Step 5: Solve for x
    x = 209,008,427,170.45/528,365.67
  6. Step 6: Final answer
    x = 395,575.34

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Double scale
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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.