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Finding the Fourth Proportional to 713,062.32, 984,010.32 and 390,765.60

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Solution

The fourth proportional to 713,062.32, 984,010.32 and 390,765.60 is: 539,247.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,062.32 : 984,010.32 = 390,765.60 : x
  2. Step 2: Convert to fraction form
    713,062.32/984,010.32 = 390,765.60/x
  3. Step 3: Cross multiply
    713,062.32x = 984,010.32 × 390,765.60
  4. Step 4: Simplify right side
    713,062.32x = 384,517,383,100.99
  5. Step 5: Solve for x
    x = 384,517,383,100.99/713,062.32
  6. Step 6: Final answer
    x = 539,247.93

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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.