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Finding the Fourth Proportional to 692,717,446.80, 955,587,650.04 and 428,314,920.72

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Solution

The fourth proportional to 692,717,446.80, 955,587,650.04 and 428,314,920.72 is: 590,850,498.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,717,446.80 : 955,587,650.04 = 428,314,920.72 : x
  2. Step 2: Convert to fraction form
    692,717,446.80/955,587,650.04 = 428,314,920.72/x
  3. Step 3: Cross multiply
    692,717,446.80x = 955,587,650.04 × 428,314,920.72
  4. Step 4: Simplify right side
    692,717,446.80x = 409,292,448,567,893,696
  5. Step 5: Solve for x
    x = 409,292,448,567,893,696/692,717,446.80
  6. Step 6: Final answer
    x = 590,850,498.22

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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.