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Finding the Fourth Proportional to 528,060.80, 792,091.20 and 440,580.80

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Solution

The fourth proportional to 528,060.80, 792,091.20 and 440,580.80 is: 660,871.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,060.80 : 792,091.20 = 440,580.80 : x
  2. Step 2: Convert to fraction form
    528,060.80/792,091.20 = 440,580.80/x
  3. Step 3: Cross multiply
    528,060.80x = 792,091.20 × 440,580.80
  4. Step 4: Simplify right side
    528,060.80x = 348,980,174,568.96
  5. Step 5: Solve for x
    x = 348,980,174,568.96/528,060.80
  6. Step 6: Final answer
    x = 660,871.20

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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.