Home / 755,326,941.57-1,042,383,348.36-420,799,274.64

Finding the Fourth Proportional to 755,326,941.57, 1,042,383,348.36 and 420,799,274.64

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Solution

The fourth proportional to 755,326,941.57, 1,042,383,348.36 and 420,799,274.64 is: 580,720,920.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,326,941.57 : 1,042,383,348.36 = 420,799,274.64 : x
  2. Step 2: Convert to fraction form
    755,326,941.57/1,042,383,348.36 = 420,799,274.64/x
  3. Step 3: Cross multiply
    755,326,941.57x = 1,042,383,348.36 × 420,799,274.64
  4. Step 4: Simplify right side
    755,326,941.57x = 438,634,156,886,702,400
  5. Step 5: Solve for x
    x = 438,634,156,886,702,400/755,326,941.57
  6. Step 6: Final answer
    x = 580,720,920.63

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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.