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Finding the Fourth Proportional to 495,410.39, 683,708.50 and 280,588.67

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Solution

The fourth proportional to 495,410.39, 683,708.50 and 280,588.67 is: 387,236.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,410.39 : 683,708.50 = 280,588.67 : x
  2. Step 2: Convert to fraction form
    495,410.39/683,708.50 = 280,588.67/x
  3. Step 3: Cross multiply
    495,410.39x = 683,708.50 × 280,588.67
  4. Step 4: Simplify right side
    495,410.39x = 191,840,860,589.54
  5. Step 5: Solve for x
    x = 191,840,860,589.54/495,410.39
  6. Step 6: Final answer
    x = 387,236.25

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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.