Home / 426,758,047.07-640,228,445.51-127,650,466.76

Finding the Fourth Proportional to 426,758,047.07, 640,228,445.51 and 127,650,466.76

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Solution

The fourth proportional to 426,758,047.07, 640,228,445.51 and 127,650,466.76 is: 191,503,031.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,758,047.07 : 640,228,445.51 = 127,650,466.76 : x
  2. Step 2: Convert to fraction form
    426,758,047.07/640,228,445.51 = 127,650,466.76/x
  3. Step 3: Cross multiply
    426,758,047.07x = 640,228,445.51 × 127,650,466.76
  4. Step 4: Simplify right side
    426,758,047.07x = 81,725,459,904,299,728
  5. Step 5: Solve for x
    x = 81,725,459,904,299,728/426,758,047.07
  6. Step 6: Final answer
    x = 191,503,031.91

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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.