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Finding the Fourth Proportional to 570,612.40, 788,265.35 and 455,740.23

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Solution

The fourth proportional to 570,612.40, 788,265.35 and 455,740.23 is: 629,576.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,612.40 : 788,265.35 = 455,740.23 : x
  2. Step 2: Convert to fraction form
    570,612.40/788,265.35 = 455,740.23/x
  3. Step 3: Cross multiply
    570,612.40x = 788,265.35 × 455,740.23
  4. Step 4: Simplify right side
    570,612.40x = 359,244,231,910.03
  5. Step 5: Solve for x
    x = 359,244,231,910.03/570,612.40
  6. Step 6: Final answer
    x = 629,576.63

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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.