Home / 1,121,642,699.60-1,680,960,151.33-872,948,268.65

Finding the Fourth Proportional to 1,121,642,699.60, 1,680,960,151.33 and 872,948,268.65

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Solution

The fourth proportional to 1,121,642,699.60, 1,680,960,151.33 and 872,948,268.65 is: 1,308,251,954.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,642,699.60 : 1,680,960,151.33 = 872,948,268.65 : x
  2. Step 2: Convert to fraction form
    1,121,642,699.60/1,680,960,151.33 = 872,948,268.65/x
  3. Step 3: Cross multiply
    1,121,642,699.60x = 1,680,960,151.33 × 872,948,268.65
  4. Step 4: Simplify right side
    1,121,642,699.60x = 1,467,391,253,775,185,664
  5. Step 5: Solve for x
    x = 1,467,391,253,775,185,664/1,121,642,699.60
  6. Step 6: Final answer
    x = 1,308,251,954.29

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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.