Home / 839,484,421.30-1,259,388,032.55-321,874,495.30

Finding the Fourth Proportional to 839,484,421.30, 1,259,388,032.55 and 321,874,495.30

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Solution

The fourth proportional to 839,484,421.30, 1,259,388,032.55 and 321,874,495.30 is: 482,873,627.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,484,421.30 : 1,259,388,032.55 = 321,874,495.30 : x
  2. Step 2: Convert to fraction form
    839,484,421.30/1,259,388,032.55 = 321,874,495.30/x
  3. Step 3: Cross multiply
    839,484,421.30x = 1,259,388,032.55 × 321,874,495.30
  4. Step 4: Simplify right side
    839,484,421.30x = 405,364,887,363,891,200
  5. Step 5: Solve for x
    x = 405,364,887,363,891,200/839,484,421.30
  6. Step 6: Final answer
    x = 482,873,627.05

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Double scale
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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.