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Finding the Fourth Proportional to 428,161.52, 590,302.77 and 368,374.40

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Solution

The fourth proportional to 428,161.52, 590,302.77 and 368,374.40 is: 507,874.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,161.52 : 590,302.77 = 368,374.40 : x
  2. Step 2: Convert to fraction form
    428,161.52/590,302.77 = 368,374.40/x
  3. Step 3: Cross multiply
    428,161.52x = 590,302.77 × 368,374.40
  4. Step 4: Simplify right side
    428,161.52x = 217,452,425,765.57
  5. Step 5: Solve for x
    x = 217,452,425,765.57/428,161.52
  6. Step 6: Final answer
    x = 507,874.76

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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.