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Finding the Fourth Proportional to 978,256.90, 1,467,385.35 and 978,256.90

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Solution

The fourth proportional to 978,256.90, 1,467,385.35 and 978,256.90 is: 1,467,385.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,256.90 : 1,467,385.35 = 978,256.90 : x
  2. Step 2: Convert to fraction form
    978,256.90/1,467,385.35 = 978,256.90/x
  3. Step 3: Cross multiply
    978,256.90x = 1,467,385.35 × 978,256.90
  4. Step 4: Simplify right side
    978,256.90x = 1,435,479,843,596.42
  5. Step 5: Solve for x
    x = 1,435,479,843,596.42/978,256.90
  6. Step 6: Final answer
    x = 1,467,385.35

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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.