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Finding the Fourth Proportional to 528,076.10, 789,810.15 and 472,319.30

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Solution

The fourth proportional to 528,076.10, 789,810.15 and 472,319.30 is: 706,418.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,076.10 : 789,810.15 = 472,319.30 : x
  2. Step 2: Convert to fraction form
    528,076.10/789,810.15 = 472,319.30/x
  3. Step 3: Cross multiply
    528,076.10x = 789,810.15 × 472,319.30
  4. Step 4: Simplify right side
    528,076.10x = 373,042,577,180.90
  5. Step 5: Solve for x
    x = 373,042,577,180.90/528,076.10
  6. Step 6: Final answer
    x = 706,418.22

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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.