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Finding the Fourth Proportional to 708,954.81, 978,182.60 and 418,573.15

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Solution

The fourth proportional to 708,954.81, 978,182.60 and 418,573.15 is: 577,527.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,954.81 : 978,182.60 = 418,573.15 : x
  2. Step 2: Convert to fraction form
    708,954.81/978,182.60 = 418,573.15/x
  3. Step 3: Cross multiply
    708,954.81x = 978,182.60 × 418,573.15
  4. Step 4: Simplify right side
    708,954.81x = 409,440,972,157.19
  5. Step 5: Solve for x
    x = 409,440,972,157.19/708,954.81
  6. Step 6: Final answer
    x = 577,527.60

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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.