Home / 812,503,218.80-1,218,370,626.75-314,746,859.25

Finding the Fourth Proportional to 812,503,218.80, 1,218,370,626.75 and 314,746,859.25

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Solution

The fourth proportional to 812,503,218.80, 1,218,370,626.75 and 314,746,859.25 is: 471,971,457.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,503,218.80 : 1,218,370,626.75 = 314,746,859.25 : x
  2. Step 2: Convert to fraction form
    812,503,218.80/1,218,370,626.75 = 314,746,859.25/x
  3. Step 3: Cross multiply
    812,503,218.80x = 1,218,370,626.75 × 314,746,859.25
  4. Step 4: Simplify right side
    812,503,218.80x = 383,478,328,173,212,544
  5. Step 5: Solve for x
    x = 383,478,328,173,212,544/812,503,218.80
  6. Step 6: Final answer
    x = 471,971,457.22

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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.