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Finding the Fourth Proportional to 665,304.29, 918,120.30 and 359,380.67

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Solution

The fourth proportional to 665,304.29, 918,120.30 and 359,380.67 is: 495,945.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,304.29 : 918,120.30 = 359,380.67 : x
  2. Step 2: Convert to fraction form
    665,304.29/918,120.30 = 359,380.67/x
  3. Step 3: Cross multiply
    665,304.29x = 918,120.30 × 359,380.67
  4. Step 4: Simplify right side
    665,304.29x = 329,954,688,554.60
  5. Step 5: Solve for x
    x = 329,954,688,554.60/665,304.29
  6. Step 6: Final answer
    x = 495,945.53

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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.