Home / 429,512,660.75-644,264,874.52-254,509,721.91

Finding the Fourth Proportional to 429,512,660.75, 644,264,874.52 and 254,509,721.91

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Solution

The fourth proportional to 429,512,660.75, 644,264,874.52 and 254,509,721.91 is: 381,762,143.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,512,660.75 : 644,264,874.52 = 254,509,721.91 : x
  2. Step 2: Convert to fraction form
    429,512,660.75/644,264,874.52 = 254,509,721.91/x
  3. Step 3: Cross multiply
    429,512,660.75x = 644,264,874.52 × 254,509,721.91
  4. Step 4: Simplify right side
    429,512,660.75x = 163,971,674,050,466,240
  5. Step 5: Solve for x
    x = 163,971,674,050,466,240/429,512,660.75
  6. Step 6: Final answer
    x = 381,762,143.55

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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.