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Finding the Fourth Proportional to 812,274,561.48, 1,121,990,377.88 and 671,713,546.71

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Solution

The fourth proportional to 812,274,561.48, 1,121,990,377.88 and 671,713,546.71 is: 927,834,222.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,274,561.48 : 1,121,990,377.88 = 671,713,546.71 : x
  2. Step 2: Convert to fraction form
    812,274,561.48/1,121,990,377.88 = 671,713,546.71/x
  3. Step 3: Cross multiply
    812,274,561.48x = 1,121,990,377.88 × 671,713,546.71
  4. Step 4: Simplify right side
    812,274,561.48x = 753,656,136,101,947,264
  5. Step 5: Solve for x
    x = 753,656,136,101,947,264/812,274,561.48
  6. Step 6: Final answer
    x = 927,834,222.37

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1.5x scale

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.