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Finding the Fourth Proportional to 674,416.62, 930,684 and 368,486.46

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Solution

The fourth proportional to 674,416.62, 930,684 and 368,486.46 is: 508,505.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,416.62 : 930,684 = 368,486.46 : x
  2. Step 2: Convert to fraction form
    674,416.62/930,684 = 368,486.46/x
  3. Step 3: Cross multiply
    674,416.62x = 930,684 × 368,486.46
  4. Step 4: Simplify right side
    674,416.62x = 342,944,452,538.64
  5. Step 5: Solve for x
    x = 342,944,452,538.64/674,416.62
  6. Step 6: Final answer
    x = 508,505.34

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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.