Home / 716,000.42-988,069.62-389,310.82

Finding the Fourth Proportional to 716,000.42, 988,069.62 and 389,310.82

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Solution

The fourth proportional to 716,000.42, 988,069.62 and 389,310.82 is: 537,242.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,000.42 : 988,069.62 = 389,310.82 : x
  2. Step 2: Convert to fraction form
    716,000.42/988,069.62 = 389,310.82/x
  3. Step 3: Cross multiply
    716,000.42x = 988,069.62 × 389,310.82
  4. Step 4: Simplify right side
    716,000.42x = 384,666,192,969.03
  5. Step 5: Solve for x
    x = 384,666,192,969.03/716,000.42
  6. Step 6: Final answer
    x = 537,242.97

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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.