Home / 718,481,100.35-1,077,717,128.18-386,644,420.57

Finding the Fourth Proportional to 718,481,100.35, 1,077,717,128.18 and 386,644,420.57

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Solution

The fourth proportional to 718,481,100.35, 1,077,717,128.18 and 386,644,420.57 is: 579,964,197.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,481,100.35 : 1,077,717,128.18 = 386,644,420.57 : x
  2. Step 2: Convert to fraction form
    718,481,100.35/1,077,717,128.18 = 386,644,420.57/x
  3. Step 3: Cross multiply
    718,481,100.35x = 1,077,717,128.18 × 386,644,420.57
  4. Step 4: Simplify right side
    718,481,100.35x = 416,693,314,562,934,464
  5. Step 5: Solve for x
    x = 416,693,314,562,934,464/718,481,100.35
  6. Step 6: Final answer
    x = 579,964,197.19

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1.5x scale

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.