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Finding the Fourth Proportional to 528,096.10, 789,840.15 and 472,339.30

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Solution

The fourth proportional to 528,096.10, 789,840.15 and 472,339.30 is: 706,448.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,096.10 : 789,840.15 = 472,339.30 : x
  2. Step 2: Convert to fraction form
    528,096.10/789,840.15 = 472,339.30/x
  3. Step 3: Cross multiply
    528,096.10x = 789,840.15 × 472,339.30
  4. Step 4: Simplify right side
    528,096.10x = 373,072,543,562.90
  5. Step 5: Solve for x
    x = 373,072,543,562.90/528,096.10
  6. Step 6: Final answer
    x = 706,448.21

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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.