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Finding the Fourth Proportional to 460,387.40, 635,432.64 and 309,396.92

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Solution

The fourth proportional to 460,387.40, 635,432.64 and 309,396.92 is: 427,033.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,387.40 : 635,432.64 = 309,396.92 : x
  2. Step 2: Convert to fraction form
    460,387.40/635,432.64 = 309,396.92/x
  3. Step 3: Cross multiply
    460,387.40x = 635,432.64 × 309,396.92
  4. Step 4: Simplify right side
    460,387.40x = 196,600,901,683.47
  5. Step 5: Solve for x
    x = 196,600,901,683.47/460,387.40
  6. Step 6: Final answer
    x = 427,033.63

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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.