Home / 641,712,998.65-962,634,751.59-221,479,678.30

Finding the Fourth Proportional to 641,712,998.65, 962,634,751.59 and 221,479,678.30

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Solution

The fourth proportional to 641,712,998.65, 962,634,751.59 and 221,479,678.30 is: 332,242,038.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,712,998.65 : 962,634,751.59 = 221,479,678.30 : x
  2. Step 2: Convert to fraction form
    641,712,998.65/962,634,751.59 = 221,479,678.30/x
  3. Step 3: Cross multiply
    641,712,998.65x = 962,634,751.59 × 221,479,678.30
  4. Step 4: Simplify right side
    641,712,998.65x = 213,204,035,102,553,632
  5. Step 5: Solve for x
    x = 213,204,035,102,553,632/641,712,998.65
  6. Step 6: Final answer
    x = 332,242,038.97

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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.