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Finding the Fourth Proportional to 528,420.99, 792,774.40 and 376,809.55

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Solution

The fourth proportional to 528,420.99, 792,774.40 and 376,809.55 is: 565,316.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,420.99 : 792,774.40 = 376,809.55 : x
  2. Step 2: Convert to fraction form
    528,420.99/792,774.40 = 376,809.55/x
  3. Step 3: Cross multiply
    528,420.99x = 792,774.40 × 376,809.55
  4. Step 4: Simplify right side
    528,420.99x = 298,724,961,991.56
  5. Step 5: Solve for x
    x = 298,724,961,991.56/528,420.99
  6. Step 6: Final answer
    x = 565,316.23

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1.5x scale

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.