Home / 661,859,361.12-991,497,488.88-515,608,126.32

Finding the Fourth Proportional to 661,859,361.12, 991,497,488.88 and 515,608,126.32

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Solution

The fourth proportional to 661,859,361.12, 991,497,488.88 and 515,608,126.32 is: 772,406,031.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,859,361.12 : 991,497,488.88 = 515,608,126.32 : x
  2. Step 2: Convert to fraction form
    661,859,361.12/991,497,488.88 = 515,608,126.32/x
  3. Step 3: Cross multiply
    661,859,361.12x = 991,497,488.88 × 515,608,126.32
  4. Step 4: Simplify right side
    661,859,361.12x = 511,224,162,492,401,856
  5. Step 5: Solve for x
    x = 511,224,162,492,401,856/661,859,361.12
  6. Step 6: Final answer
    x = 772,406,031.44

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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.