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Finding the Fourth Proportional to 539,076.70, 808,615.05 and 528,579.10

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Solution

The fourth proportional to 539,076.70, 808,615.05 and 528,579.10 is: 792,868.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,076.70 : 808,615.05 = 528,579.10 : x
  2. Step 2: Convert to fraction form
    539,076.70/808,615.05 = 528,579.10/x
  3. Step 3: Cross multiply
    539,076.70x = 808,615.05 × 528,579.10
  4. Step 4: Simplify right side
    539,076.70x = 427,417,015,375.46
  5. Step 5: Solve for x
    x = 427,417,015,375.46/539,076.70
  6. Step 6: Final answer
    x = 792,868.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.