Home / 879,379.79-1,212,580.40-572,887.80

Finding the Fourth Proportional to 879,379.79, 1,212,580.40 and 572,887.80

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Solution

The fourth proportional to 879,379.79, 1,212,580.40 and 572,887.80 is: 789,957.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,379.79 : 1,212,580.40 = 572,887.80 : x
  2. Step 2: Convert to fraction form
    879,379.79/1,212,580.40 = 572,887.80/x
  3. Step 3: Cross multiply
    879,379.79x = 1,212,580.40 × 572,887.80
  4. Step 4: Simplify right side
    879,379.79x = 694,672,514,814.68
  5. Step 5: Solve for x
    x = 694,672,514,814.68/879,379.79
  6. Step 6: Final answer
    x = 789,957.34

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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.