Home / 865,388,471.81-1,194,296,699.13-489,079,837.45

Finding the Fourth Proportional to 865,388,471.81, 1,194,296,699.13 and 489,079,837.45

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Solution

The fourth proportional to 865,388,471.81, 1,194,296,699.13 and 489,079,837.45 is: 674,964,428.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,388,471.81 : 1,194,296,699.13 = 489,079,837.45 : x
  2. Step 2: Convert to fraction form
    865,388,471.81/1,194,296,699.13 = 489,079,837.45/x
  3. Step 3: Cross multiply
    865,388,471.81x = 1,194,296,699.13 × 489,079,837.45
  4. Step 4: Simplify right side
    865,388,471.81x = 584,106,435,477,571,968
  5. Step 5: Solve for x
    x = 584,106,435,477,571,968/865,388,471.81
  6. Step 6: Final answer
    x = 674,964,428.70

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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.