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Finding the Fourth Proportional to 984,651.10, 1,476,976.65 and 978,430.30

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Solution

The fourth proportional to 984,651.10, 1,476,976.65 and 978,430.30 is: 1,467,645.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    984,651.10 : 1,476,976.65 = 978,430.30 : x
  2. Step 2: Convert to fraction form
    984,651.10/1,476,976.65 = 978,430.30/x
  3. Step 3: Cross multiply
    984,651.10x = 1,476,976.65 × 978,430.30
  4. Step 4: Simplify right side
    984,651.10x = 1,445,118,706,752.50
  5. Step 5: Solve for x
    x = 1,445,118,706,752.50/984,651.10
  6. Step 6: Final answer
    x = 1,467,645.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.