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Finding the Fourth Proportional to 570,779.19, 788,204.75 and 427,290.12

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Solution

The fourth proportional to 570,779.19, 788,204.75 and 427,290.12 is: 590,056.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,779.19 : 788,204.75 = 427,290.12 : x
  2. Step 2: Convert to fraction form
    570,779.19/788,204.75 = 427,290.12/x
  3. Step 3: Cross multiply
    570,779.19x = 788,204.75 × 427,290.12
  4. Step 4: Simplify right side
    570,779.19x = 336,792,100,075.62
  5. Step 5: Solve for x
    x = 336,792,100,075.62/570,779.19
  6. Step 6: Final answer
    x = 590,056.73

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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.