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Finding the Fourth Proportional to 485,514,003.90, 728,271,005.85 and 485,514,003.90

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Solution

The fourth proportional to 485,514,003.90, 728,271,005.85 and 485,514,003.90 is: 728,271,005.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,514,003.90 : 728,271,005.85 = 485,514,003.90 : x
  2. Step 2: Convert to fraction form
    485,514,003.90/728,271,005.85 = 485,514,003.90/x
  3. Step 3: Cross multiply
    485,514,003.90x = 728,271,005.85 × 485,514,003.90
  4. Step 4: Simplify right side
    485,514,003.90x = 353,585,771,974,513,792
  5. Step 5: Solve for x
    x = 353,585,771,974,513,792/485,514,003.90
  6. Step 6: Final answer
    x = 728,271,005.85

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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.