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Finding the Fourth Proportional to 648,193.05, 894,423.88 and 361,725.21

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Solution

The fourth proportional to 648,193.05, 894,423.88 and 361,725.21 is: 499,134.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,193.05 : 894,423.88 = 361,725.21 : x
  2. Step 2: Convert to fraction form
    648,193.05/894,423.88 = 361,725.21/x
  3. Step 3: Cross multiply
    648,193.05x = 894,423.88 × 361,725.21
  4. Step 4: Simplify right side
    648,193.05x = 323,535,666,274.17
  5. Step 5: Solve for x
    x = 323,535,666,274.17/648,193.05
  6. Step 6: Final answer
    x = 499,134.74

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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.