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Finding the Fourth Proportional to 570,779.43, 788,205.09 and 427,290.36

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Solution

The fourth proportional to 570,779.43, 788,205.09 and 427,290.36 is: 590,057.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,779.43 : 788,205.09 = 427,290.36 : x
  2. Step 2: Convert to fraction form
    570,779.43/788,205.09 = 427,290.36/x
  3. Step 3: Cross multiply
    570,779.43x = 788,205.09 × 427,290.36
  4. Step 4: Simplify right side
    570,779.43x = 336,792,436,659.93
  5. Step 5: Solve for x
    x = 336,792,436,659.93/570,779.43
  6. Step 6: Final answer
    x = 590,057.07

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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.