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Finding the Fourth Proportional to 528,088.40, 792,910.20 and 409,893.20

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Solution

The fourth proportional to 528,088.40, 792,910.20 and 409,893.20 is: 615,443.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,088.40 : 792,910.20 = 409,893.20 : x
  2. Step 2: Convert to fraction form
    528,088.40/792,910.20 = 409,893.20/x
  3. Step 3: Cross multiply
    528,088.40x = 792,910.20 × 409,893.20
  4. Step 4: Simplify right side
    528,088.40x = 325,008,499,190.64
  5. Step 5: Solve for x
    x = 325,008,499,190.64/528,088.40
  6. Step 6: Final answer
    x = 615,443.36

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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.