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Finding the Fourth Proportional to 690,393.60, 952,764.86 and 380,318.67

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Solution

The fourth proportional to 690,393.60, 952,764.86 and 380,318.67 is: 524,851.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,393.60 : 952,764.86 = 380,318.67 : x
  2. Step 2: Convert to fraction form
    690,393.60/952,764.86 = 380,318.67/x
  3. Step 3: Cross multiply
    690,393.60x = 952,764.86 × 380,318.67
  4. Step 4: Simplify right side
    690,393.60x = 362,354,264,377.94
  5. Step 5: Solve for x
    x = 362,354,264,377.94/690,393.60
  6. Step 6: Final answer
    x = 524,851.71

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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.