Home / 858,275,999.10-1,287,413,998.65-212,043,743.10

Finding the Fourth Proportional to 858,275,999.10, 1,287,413,998.65 and 212,043,743.10

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Solution

The fourth proportional to 858,275,999.10, 1,287,413,998.65 and 212,043,743.10 is: 318,065,614.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,275,999.10 : 1,287,413,998.65 = 212,043,743.10 : x
  2. Step 2: Convert to fraction form
    858,275,999.10/1,287,413,998.65 = 212,043,743.10/x
  3. Step 3: Cross multiply
    858,275,999.10x = 1,287,413,998.65 × 212,043,743.10
  4. Step 4: Simplify right side
    858,275,999.10x = 272,988,083,193,084,352
  5. Step 5: Solve for x
    x = 272,988,083,193,084,352/858,275,999.10
  6. Step 6: Final answer
    x = 318,065,614.65

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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.