Home / 786,084,354.57-1,178,505,244.11-392,409,137.15

Finding the Fourth Proportional to 786,084,354.57, 1,178,505,244.11 and 392,409,137.15

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Solution

The fourth proportional to 786,084,354.57, 1,178,505,244.11 and 392,409,137.15 is: 588,303,562.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,084,354.57 : 1,178,505,244.11 = 392,409,137.15 : x
  2. Step 2: Convert to fraction form
    786,084,354.57/1,178,505,244.11 = 392,409,137.15/x
  3. Step 3: Cross multiply
    786,084,354.57x = 1,178,505,244.11 × 392,409,137.15
  4. Step 4: Simplify right side
    786,084,354.57x = 462,456,225,965,701,184
  5. Step 5: Solve for x
    x = 462,456,225,965,701,184/786,084,354.57
  6. Step 6: Final answer
    x = 588,303,562.18

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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.