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Finding the Fourth Proportional to 389,407.60, 584,111.40 and 264,991.60

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Solution

The fourth proportional to 389,407.60, 584,111.40 and 264,991.60 is: 397,487.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,407.60 : 584,111.40 = 264,991.60 : x
  2. Step 2: Convert to fraction form
    389,407.60/584,111.40 = 264,991.60/x
  3. Step 3: Cross multiply
    389,407.60x = 584,111.40 × 264,991.60
  4. Step 4: Simplify right side
    389,407.60x = 154,784,614,464.24
  5. Step 5: Solve for x
    x = 154,784,614,464.24/389,407.60
  6. Step 6: Final answer
    x = 397,487.40

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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.