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Finding the Fourth Proportional to 713,144.92, 984,147.69 and 390,848.08

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Solution

The fourth proportional to 713,144.92, 984,147.69 and 390,848.08 is: 539,374.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,144.92 : 984,147.69 = 390,848.08 : x
  2. Step 2: Convert to fraction form
    713,144.92/984,147.69 = 390,848.08/x
  3. Step 3: Cross multiply
    713,144.92x = 984,147.69 × 390,848.08
  4. Step 4: Simplify right side
    713,144.92x = 384,652,235,072.94
  5. Step 5: Solve for x
    x = 384,652,235,072.94/713,144.92
  6. Step 6: Final answer
    x = 539,374.57

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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.