Home / 1,018,528,266.46-1,528,385,288.64-428,275,791.06

Finding the Fourth Proportional to 1,018,528,266.46, 1,528,385,288.64 and 428,275,791.06

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Solution

The fourth proportional to 1,018,528,266.46, 1,528,385,288.64 and 428,275,791.06 is: 642,662,987.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,018,528,266.46 : 1,528,385,288.64 = 428,275,791.06 : x
  2. Step 2: Convert to fraction form
    1,018,528,266.46/1,528,385,288.64 = 428,275,791.06/x
  3. Step 3: Cross multiply
    1,018,528,266.46x = 1,528,385,288.64 × 428,275,791.06
  4. Step 4: Simplify right side
    1,018,528,266.46x = 654,570,418,544,319,872
  5. Step 5: Solve for x
    x = 654,570,418,544,319,872/1,018,528,266.46
  6. Step 6: Final answer
    x = 642,662,987.47

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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.