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Finding the Fourth Proportional to 510,793.81, 704,979.53 and 389,706.30

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Solution

The fourth proportional to 510,793.81, 704,979.53 and 389,706.30 is: 537,858.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,793.81 : 704,979.53 = 389,706.30 : x
  2. Step 2: Convert to fraction form
    510,793.81/704,979.53 = 389,706.30/x
  3. Step 3: Cross multiply
    510,793.81x = 704,979.53 × 389,706.30
  4. Step 4: Simplify right side
    510,793.81x = 274,734,965,186.31
  5. Step 5: Solve for x
    x = 274,734,965,186.31/510,793.81
  6. Step 6: Final answer
    x = 537,858.84

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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.