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Finding the Fourth Proportional to 528,054.60, 792,081.90 and 318,102.60

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Solution

The fourth proportional to 528,054.60, 792,081.90 and 318,102.60 is: 477,153.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,054.60 : 792,081.90 = 318,102.60 : x
  2. Step 2: Convert to fraction form
    528,054.60/792,081.90 = 318,102.60/x
  3. Step 3: Cross multiply
    528,054.60x = 792,081.90 × 318,102.60
  4. Step 4: Simplify right side
    528,054.60x = 251,963,311,802.94
  5. Step 5: Solve for x
    x = 251,963,311,802.94/528,054.60
  6. Step 6: Final answer
    x = 477,153.90

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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.