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Finding the Fourth Proportional to 536,605.71, 740,485.85 and 321,638.19

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Solution

The fourth proportional to 536,605.71, 740,485.85 and 321,638.19 is: 443,842.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,605.71 : 740,485.85 = 321,638.19 : x
  2. Step 2: Convert to fraction form
    536,605.71/740,485.85 = 321,638.19/x
  3. Step 3: Cross multiply
    536,605.71x = 740,485.85 × 321,638.19
  4. Step 4: Simplify right side
    536,605.71x = 238,168,526,906.42
  5. Step 5: Solve for x
    x = 238,168,526,906.42/536,605.71
  6. Step 6: Final answer
    x = 443,842.70

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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.