Home / 718,890,468,370.84-992,100,031,309.20-398,106,303,478.82

Finding the Fourth Proportional to 718,890,468,370.84, 992,100,031,309.20 and 398,106,303,478.82

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Solution

The fourth proportional to 718,890,468,370.84, 992,100,031,309.20 and 398,106,303,478.82 is: 549,403,968,369.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,890,468,370.84 : 992,100,031,309.20 = 398,106,303,478.82 : x
  2. Step 2: Convert to fraction form
    718,890,468,370.84/992,100,031,309.20 = 398,106,303,478.82/x
  3. Step 3: Cross multiply
    718,890,468,370.84x = 992,100,031,309.20 × 398,106,303,478.82
  4. Step 4: Simplify right side
    718,890,468,370.84x = 394,961,276,145,727,189,286,912
  5. Step 5: Solve for x
    x = 394,961,276,145,727,189,286,912/718,890,468,370.84
  6. Step 6: Final answer
    x = 549,403,968,369.19

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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.