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Finding the Fourth Proportional to 880,751,821.55, 1,321,642,897.95 and 328,435,819.07

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Solution

The fourth proportional to 880,751,821.55, 1,321,642,897.95 and 328,435,819.07 is: 492,845,835.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,751,821.55 : 1,321,642,897.95 = 328,435,819.07 : x
  2. Step 2: Convert to fraction form
    880,751,821.55/1,321,642,897.95 = 328,435,819.07/x
  3. Step 3: Cross multiply
    880,751,821.55x = 1,321,642,897.95 × 328,435,819.07
  4. Step 4: Simplify right side
    880,751,821.55x = 434,074,867,699,648,448
  5. Step 5: Solve for x
    x = 434,074,867,699,648,448/880,751,821.55
  6. Step 6: Final answer
    x = 492,845,835.89

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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.