Home / 411,428,508,942.22-617,144,843,687.95-128,423,628,894.22

Finding the Fourth Proportional to 411,428,508,942.22, 617,144,843,687.95 and 128,423,628,894.22

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Solution

The fourth proportional to 411,428,508,942.22, 617,144,843,687.95 and 128,423,628,894.22 is: 192,636,092,679.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,428,508,942.22 : 617,144,843,687.95 = 128,423,628,894.22 : x
  2. Step 2: Convert to fraction form
    411,428,508,942.22/617,144,843,687.95 = 128,423,628,894.22/x
  3. Step 3: Cross multiply
    411,428,508,942.22x = 617,144,843,687.95 × 128,423,628,894.22
  4. Step 4: Simplify right side
    411,428,508,942.22x = 79,255,980,379,762,688,262,144
  5. Step 5: Solve for x
    x = 79,255,980,379,762,688,262,144/411,428,508,942.22
  6. Step 6: Final answer
    x = 192,636,092,679.94

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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.