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Finding the Fourth Proportional to 657,069.01, 906,583.88 and 384,990.72

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Solution

The fourth proportional to 657,069.01, 906,583.88 and 384,990.72 is: 531,186.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,069.01 : 906,583.88 = 384,990.72 : x
  2. Step 2: Convert to fraction form
    657,069.01/906,583.88 = 384,990.72/x
  3. Step 3: Cross multiply
    657,069.01x = 906,583.88 × 384,990.72
  4. Step 4: Simplify right side
    657,069.01x = 349,026,380,701.59
  5. Step 5: Solve for x
    x = 349,026,380,701.59/657,069.01
  6. Step 6: Final answer
    x = 531,186.79

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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.