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Finding the Fourth Proportional to 528,421.37, 792,774.97 and 376,809.92

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Solution

The fourth proportional to 528,421.37, 792,774.97 and 376,809.92 is: 565,316.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,421.37 : 792,774.97 = 376,809.92 : x
  2. Step 2: Convert to fraction form
    528,421.37/792,774.97 = 376,809.92/x
  3. Step 3: Cross multiply
    528,421.37x = 792,774.97 × 376,809.92
  4. Step 4: Simplify right side
    528,421.37x = 298,725,471,090.71
  5. Step 5: Solve for x
    x = 298,725,471,090.71/528,421.37
  6. Step 6: Final answer
    x = 565,316.79

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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.