Home / 812,020,209.75-1,218,292,630.38-375,607,171.53

Finding the Fourth Proportional to 812,020,209.75, 1,218,292,630.38 and 375,607,171.53

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Solution

The fourth proportional to 812,020,209.75, 1,218,292,630.38 and 375,607,171.53 is: 563,532,093.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,020,209.75 : 1,218,292,630.38 = 375,607,171.53 : x
  2. Step 2: Convert to fraction form
    812,020,209.75/1,218,292,630.38 = 375,607,171.53/x
  3. Step 3: Cross multiply
    812,020,209.75x = 1,218,292,630.38 × 375,607,171.53
  4. Step 4: Simplify right side
    812,020,209.75x = 457,599,448,992,875,584
  5. Step 5: Solve for x
    x = 457,599,448,992,875,584/812,020,209.75
  6. Step 6: Final answer
    x = 563,532,093.78

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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.