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Finding the Fourth Proportional to 485,514,007.65, 728,271,011.48 and 485,514,007.65

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Solution

The fourth proportional to 485,514,007.65, 728,271,011.48 and 485,514,007.65 is: 728,271,011.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,514,007.65 : 728,271,011.48 = 485,514,007.65 : x
  2. Step 2: Convert to fraction form
    485,514,007.65/728,271,011.48 = 485,514,007.65/x
  3. Step 3: Cross multiply
    485,514,007.65x = 728,271,011.48 × 485,514,007.65
  4. Step 4: Simplify right side
    485,514,007.65x = 353,585,777,436,546,368
  5. Step 5: Solve for x
    x = 353,585,777,436,546,368/485,514,007.65
  6. Step 6: Final answer
    x = 728,271,011.48

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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.