Home / 1,138,515,274.50-1,707,810,714.48-391,523,718.12

Finding the Fourth Proportional to 1,138,515,274.50, 1,707,810,714.48 and 391,523,718.12

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Solution

The fourth proportional to 1,138,515,274.50, 1,707,810,714.48 and 391,523,718.12 is: 587,298,577.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,515,274.50 : 1,707,810,714.48 = 391,523,718.12 : x
  2. Step 2: Convert to fraction form
    1,138,515,274.50/1,707,810,714.48 = 391,523,718.12/x
  3. Step 3: Cross multiply
    1,138,515,274.50x = 1,707,810,714.48 × 391,523,718.12
  4. Step 4: Simplify right side
    1,138,515,274.50x = 668,648,400,778,383,360
  5. Step 5: Solve for x
    x = 668,648,400,778,383,360/1,138,515,274.50
  6. Step 6: Final answer
    x = 587,298,577.15

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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.