Home / 670,950,891.20-1,006,089,555.14-390,922,446.71

Finding the Fourth Proportional to 670,950,891.20, 1,006,089,555.14 and 390,922,446.71

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Solution

The fourth proportional to 670,950,891.20, 1,006,089,555.14 and 390,922,446.71 is: 586,187,447.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,950,891.20 : 1,006,089,555.14 = 390,922,446.71 : x
  2. Step 2: Convert to fraction form
    670,950,891.20/1,006,089,555.14 = 390,922,446.71/x
  3. Step 3: Cross multiply
    670,950,891.20x = 1,006,089,555.14 × 390,922,446.71
  4. Step 4: Simplify right side
    670,950,891.20x = 393,302,990,502,749,632
  5. Step 5: Solve for x
    x = 393,302,990,502,749,632/670,950,891.20
  6. Step 6: Final answer
    x = 586,187,447.79

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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.