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Finding the Fourth Proportional to 492,771.40, 740,712.30 and 455,446.60

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Solution

The fourth proportional to 492,771.40, 740,712.30 and 455,446.60 is: 684,607.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,771.40 : 740,712.30 = 455,446.60 : x
  2. Step 2: Convert to fraction form
    492,771.40/740,712.30 = 455,446.60/x
  3. Step 3: Cross multiply
    492,771.40x = 740,712.30 × 455,446.60
  4. Step 4: Simplify right side
    492,771.40x = 337,354,898,613.18
  5. Step 5: Solve for x
    x = 337,354,898,613.18/492,771.40
  6. Step 6: Final answer
    x = 684,607.30

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1.5x scale

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.