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Finding the Fourth Proportional to 976,479.20, 1,368,004 and 976,479.20

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Solution

The fourth proportional to 976,479.20, 1,368,004 and 976,479.20 is: 1,368,004

Step by Step Solution

  1. Step 1: Write the proportion equation
    976,479.20 : 1,368,004 = 976,479.20 : x
  2. Step 2: Convert to fraction form
    976,479.20/1,368,004 = 976,479.20/x
  3. Step 3: Cross multiply
    976,479.20x = 1,368,004 × 976,479.20
  4. Step 4: Simplify right side
    976,479.20x = 1,335,827,451,516.80
  5. Step 5: Solve for x
    x = 1,335,827,451,516.80/976,479.20
  6. Step 6: Final answer
    x = 1,368,004

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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.