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Finding the Fourth Proportional to 528,043.70, 792,065.55 and 509,381.30

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Solution

The fourth proportional to 528,043.70, 792,065.55 and 509,381.30 is: 764,071.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,043.70 : 792,065.55 = 509,381.30 : x
  2. Step 2: Convert to fraction form
    528,043.70/792,065.55 = 509,381.30/x
  3. Step 3: Cross multiply
    528,043.70x = 792,065.55 × 509,381.30
  4. Step 4: Simplify right side
    528,043.70x = 403,463,379,544.22
  5. Step 5: Solve for x
    x = 403,463,379,544.22/528,043.70
  6. Step 6: Final answer
    x = 764,071.95

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Similar ratio
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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.