Home / 412,063,413.40-618,095,120.10-105,339,287.80

Finding the Fourth Proportional to 412,063,413.40, 618,095,120.10 and 105,339,287.80

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Solution

The fourth proportional to 412,063,413.40, 618,095,120.10 and 105,339,287.80 is: 158,008,931.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,063,413.40 : 618,095,120.10 = 105,339,287.80 : x
  2. Step 2: Convert to fraction form
    412,063,413.40/618,095,120.10 = 105,339,287.80/x
  3. Step 3: Cross multiply
    412,063,413.40x = 618,095,120.10 × 105,339,287.80
  4. Step 4: Simplify right side
    412,063,413.40x = 65,109,699,743,989,464
  5. Step 5: Solve for x
    x = 65,109,699,743,989,464/412,063,413.40
  6. Step 6: Final answer
    x = 158,008,931.70

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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.