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Finding the Fourth Proportional to 571,638.20, 788,803.86 and 329,998.60

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Solution

The fourth proportional to 571,638.20, 788,803.86 and 329,998.60 is: 455,365.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,638.20 : 788,803.86 = 329,998.60 : x
  2. Step 2: Convert to fraction form
    571,638.20/788,803.86 = 329,998.60/x
  3. Step 3: Cross multiply
    571,638.20x = 788,803.86 × 329,998.60
  4. Step 4: Simplify right side
    571,638.20x = 260,304,169,474.60
  5. Step 5: Solve for x
    x = 260,304,169,474.60/571,638.20
  6. Step 6: Final answer
    x = 455,365.25

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1.5x scale

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.