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Finding the Fourth Proportional to 570,615.50, 788,269.60 and 455,743.32

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Solution

The fourth proportional to 570,615.50, 788,269.60 and 455,743.32 is: 629,580.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,615.50 : 788,269.60 = 455,743.32 : x
  2. Step 2: Convert to fraction form
    570,615.50/788,269.60 = 455,743.32/x
  3. Step 3: Cross multiply
    570,615.50x = 788,269.60 × 455,743.32
  4. Step 4: Simplify right side
    570,615.50x = 359,248,604,559.07
  5. Step 5: Solve for x
    x = 359,248,604,559.07/570,615.50
  6. Step 6: Final answer
    x = 629,580.87

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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.