Home / 1,315,314,068.68-1,815,132,786.24-786,678,044.14

Finding the Fourth Proportional to 1,315,314,068.68, 1,815,132,786.24 and 786,678,044.14

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Solution

The fourth proportional to 1,315,314,068.68, 1,815,132,786.24 and 786,678,044.14 is: 1,085,615,324.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,314,068.68 : 1,815,132,786.24 = 786,678,044.14 : x
  2. Step 2: Convert to fraction form
    1,315,314,068.68/1,815,132,786.24 = 786,678,044.14/x
  3. Step 3: Cross multiply
    1,315,314,068.68x = 1,815,132,786.24 × 786,678,044.14
  4. Step 4: Simplify right side
    1,315,314,068.68x = 1,427,925,110,133,671,936
  5. Step 5: Solve for x
    x = 1,427,925,110,133,671,936/1,315,314,068.68
  6. Step 6: Final answer
    x = 1,085,615,324.99

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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.