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Finding the Fourth Proportional to 528,039.30, 792,058.95 and 440,948.10

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Solution

The fourth proportional to 528,039.30, 792,058.95 and 440,948.10 is: 661,422.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,039.30 : 792,058.95 = 440,948.10 : x
  2. Step 2: Convert to fraction form
    528,039.30/792,058.95 = 440,948.10/x
  3. Step 3: Cross multiply
    528,039.30x = 792,058.95 × 440,948.10
  4. Step 4: Simplify right side
    528,039.30x = 349,256,889,090.50
  5. Step 5: Solve for x
    x = 349,256,889,090.50/528,039.30
  6. Step 6: Final answer
    x = 661,422.15

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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.