Home / 756,211,531.32-1,043,590,366.03-421,680,788.75

Finding the Fourth Proportional to 756,211,531.32, 1,043,590,366.03 and 421,680,788.75

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Solution

The fourth proportional to 756,211,531.32, 1,043,590,366.03 and 421,680,788.75 is: 581,929,778.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,211,531.32 : 1,043,590,366.03 = 421,680,788.75 : x
  2. Step 2: Convert to fraction form
    756,211,531.32/1,043,590,366.03 = 421,680,788.75/x
  3. Step 3: Cross multiply
    756,211,531.32x = 1,043,590,366.03 × 421,680,788.75
  4. Step 4: Simplify right side
    756,211,531.32x = 440,062,008,672,105,216
  5. Step 5: Solve for x
    x = 440,062,008,672,105,216/756,211,531.32
  6. Step 6: Final answer
    x = 581,929,778.18

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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.