Home / 930,708,100.80-1,284,376,866.66-513,027,361.26

Finding the Fourth Proportional to 930,708,100.80, 1,284,376,866.66 and 513,027,361.26

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Solution

The fourth proportional to 930,708,100.80, 1,284,376,866.66 and 513,027,361.26 is: 707,977,586.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    930,708,100.80 : 1,284,376,866.66 = 513,027,361.26 : x
  2. Step 2: Convert to fraction form
    930,708,100.80/1,284,376,866.66 = 513,027,361.26/x
  3. Step 3: Cross multiply
    930,708,100.80x = 1,284,376,866.66 × 513,027,361.26
  4. Step 4: Simplify right side
    930,708,100.80x = 658,920,474,765,966,720
  5. Step 5: Solve for x
    x = 658,920,474,765,966,720/930,708,100.80
  6. Step 6: Final answer
    x = 707,977,586.31

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1.5x scale

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.