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Finding the Fourth Proportional to 821,651.10, 1,153,629.30 and 821,651.10

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Solution

The fourth proportional to 821,651.10, 1,153,629.30 and 821,651.10 is: 1,153,629.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,651.10 : 1,153,629.30 = 821,651.10 : x
  2. Step 2: Convert to fraction form
    821,651.10/1,153,629.30 = 821,651.10/x
  3. Step 3: Cross multiply
    821,651.10x = 1,153,629.30 × 821,651.10
  4. Step 4: Simplify right side
    821,651.10x = 947,880,783,337.23
  5. Step 5: Solve for x
    x = 947,880,783,337.23/821,651.10
  6. Step 6: Final answer
    x = 1,153,629.30

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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.