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Finding the Fourth Proportional to 711,257.80, 997,419.80 and 711,257.80

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Solution

The fourth proportional to 711,257.80, 997,419.80 and 711,257.80 is: 997,419.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,257.80 : 997,419.80 = 711,257.80 : x
  2. Step 2: Convert to fraction form
    711,257.80/997,419.80 = 711,257.80/x
  3. Step 3: Cross multiply
    711,257.80x = 997,419.80 × 711,257.80
  4. Step 4: Simplify right side
    711,257.80x = 709,422,612,624.44
  5. Step 5: Solve for x
    x = 709,422,612,624.44/711,257.80
  6. Step 6: Final answer
    x = 997,419.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.