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Finding the Fourth Proportional to 709,316.64, 978,856.56 and 454,667.64

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Solution

The fourth proportional to 709,316.64, 978,856.56 and 454,667.64 is: 627,441.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,316.64 : 978,856.56 = 454,667.64 : x
  2. Step 2: Convert to fraction form
    709,316.64/978,856.56 = 454,667.64/x
  3. Step 3: Cross multiply
    709,316.64x = 978,856.56 × 454,667.64
  4. Step 4: Simplify right side
    709,316.64x = 445,054,402,033.72
  5. Step 5: Solve for x
    x = 445,054,402,033.72/709,316.64
  6. Step 6: Final answer
    x = 627,441.08

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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.