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Finding the Fourth Proportional to 976,478.20, 1,368,002.60 and 976,478.20

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Solution

The fourth proportional to 976,478.20, 1,368,002.60 and 976,478.20 is: 1,368,002.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    976,478.20 : 1,368,002.60 = 976,478.20 : x
  2. Step 2: Convert to fraction form
    976,478.20/1,368,002.60 = 976,478.20/x
  3. Step 3: Cross multiply
    976,478.20x = 1,368,002.60 × 976,478.20
  4. Step 4: Simplify right side
    976,478.20x = 1,335,824,716,443.32
  5. Step 5: Solve for x
    x = 1,335,824,716,443.32/976,478.20
  6. Step 6: Final answer
    x = 1,368,002.60

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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.