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Finding the Fourth Proportional to 978,650.72, 1,467,904.80 and 439,074.08

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Solution

The fourth proportional to 978,650.72, 1,467,904.80 and 439,074.08 is: 658,579.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,650.72 : 1,467,904.80 = 439,074.08 : x
  2. Step 2: Convert to fraction form
    978,650.72/1,467,904.80 = 439,074.08/x
  3. Step 3: Cross multiply
    978,650.72x = 1,467,904.80 × 439,074.08
  4. Step 4: Simplify right side
    978,650.72x = 644,518,949,587.58
  5. Step 5: Solve for x
    x = 644,518,949,587.58/978,650.72
  6. Step 6: Final answer
    x = 658,579.14

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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.