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Finding the Fourth Proportional to 536,690.28, 740,573.10 and 321,839.40

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Solution

The fourth proportional to 536,690.28, 740,573.10 and 321,839.40 is: 444,102.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,690.28 : 740,573.10 = 321,839.40 : x
  2. Step 2: Convert to fraction form
    536,690.28/740,573.10 = 321,839.40/x
  3. Step 3: Cross multiply
    536,690.28x = 740,573.10 × 321,839.40
  4. Step 4: Simplify right side
    536,690.28x = 238,345,602,160.14
  5. Step 5: Solve for x
    x = 238,345,602,160.14/536,690.28
  6. Step 6: Final answer
    x = 444,102.70

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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.