Home / 717,143,653.48-989,632,114.32-399,587,491.84

Finding the Fourth Proportional to 717,143,653.48, 989,632,114.32 and 399,587,491.84

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Solution

The fourth proportional to 717,143,653.48, 989,632,114.32 and 399,587,491.84 is: 551,416,180.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,143,653.48 : 989,632,114.32 = 399,587,491.84 : x
  2. Step 2: Convert to fraction form
    717,143,653.48/989,632,114.32 = 399,587,491.84/x
  3. Step 3: Cross multiply
    717,143,653.48x = 989,632,114.32 × 399,587,491.84
  4. Step 4: Simplify right side
    717,143,653.48x = 395,444,614,405,444,928
  5. Step 5: Solve for x
    x = 395,444,614,405,444,928/717,143,653.48
  6. Step 6: Final answer
    x = 551,416,180.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.