Home / 908,078,139.99-1,253,147,820.75-490,390,413.03

Finding the Fourth Proportional to 908,078,139.99, 1,253,147,820.75 and 490,390,413.03

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Solution

The fourth proportional to 908,078,139.99, 1,253,147,820.75 and 490,390,413.03 is: 676,738,763.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,078,139.99 : 1,253,147,820.75 = 490,390,413.03 : x
  2. Step 2: Convert to fraction form
    908,078,139.99/1,253,147,820.75 = 490,390,413.03/x
  3. Step 3: Cross multiply
    908,078,139.99x = 1,253,147,820.75 × 490,390,413.03
  4. Step 4: Simplify right side
    908,078,139.99x = 614,531,677,405,236,864
  5. Step 5: Solve for x
    x = 614,531,677,405,236,864/908,078,139.99
  6. Step 6: Final answer
    x = 676,738,763.27

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1.5x scale

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.