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Finding the Fourth Proportional to 657,638.20, 985,388.10 and 594,652.60

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Solution

The fourth proportional to 657,638.20, 985,388.10 and 594,652.60 is: 891,012.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,638.20 : 985,388.10 = 594,652.60 : x
  2. Step 2: Convert to fraction form
    657,638.20/985,388.10 = 594,652.60/x
  3. Step 3: Cross multiply
    657,638.20x = 985,388.10 × 594,652.60
  4. Step 4: Simplify right side
    657,638.20x = 585,963,595,674.06
  5. Step 5: Solve for x
    x = 585,963,595,674.06/657,638.20
  6. Step 6: Final answer
    x = 891,012.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.