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Finding the Fourth Proportional to 862,800,128.10, 1,294,200,192.15 and 862,800,128.10

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Solution

The fourth proportional to 862,800,128.10, 1,294,200,192.15 and 862,800,128.10 is: 1,294,200,192.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,800,128.10 : 1,294,200,192.15 = 862,800,128.10 : x
  2. Step 2: Convert to fraction form
    862,800,128.10/1,294,200,192.15 = 862,800,128.10/x
  3. Step 3: Cross multiply
    862,800,128.10x = 1,294,200,192.15 × 862,800,128.10
  4. Step 4: Simplify right side
    862,800,128.10x = 1,116,636,091,574,064,768
  5. Step 5: Solve for x
    x = 1,116,636,091,574,064,768/862,800,128.10
  6. Step 6: Final answer
    x = 1,294,200,192.15

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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.