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Finding the Fourth Proportional to 528,131.52, 728,840.16 and 377,588.16

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Solution

The fourth proportional to 528,131.52, 728,840.16 and 377,588.16 is: 521,085.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,131.52 : 728,840.16 = 377,588.16 : x
  2. Step 2: Convert to fraction form
    528,131.52/728,840.16 = 377,588.16/x
  3. Step 3: Cross multiply
    528,131.52x = 728,840.16 × 377,588.16
  4. Step 4: Simplify right side
    528,131.52x = 275,201,414,948.51
  5. Step 5: Solve for x
    x = 275,201,414,948.51/528,131.52
  6. Step 6: Final answer
    x = 521,085.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.