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Finding the Fourth Proportional to 713,617.44, 984,805.58 and 391,308.31

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Solution

The fourth proportional to 713,617.44, 984,805.58 and 391,308.31 is: 540,012.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,617.44 : 984,805.58 = 391,308.31 : x
  2. Step 2: Convert to fraction form
    713,617.44/984,805.58 = 391,308.31/x
  3. Step 3: Cross multiply
    713,617.44x = 984,805.58 × 391,308.31
  4. Step 4: Simplify right side
    713,617.44x = 385,362,607,188.37
  5. Step 5: Solve for x
    x = 385,362,607,188.37/713,617.44
  6. Step 6: Final answer
    x = 540,012.88

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1.5x scale

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.