Home / 704,639.20-1,056,181.20-389,322.40

Finding the Fourth Proportional to 704,639.20, 1,056,181.20 and 389,322.40

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Solution

The fourth proportional to 704,639.20, 1,056,181.20 and 389,322.40 is: 583,553.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,639.20 : 1,056,181.20 = 389,322.40 : x
  2. Step 2: Convert to fraction form
    704,639.20/1,056,181.20 = 389,322.40/x
  3. Step 3: Cross multiply
    704,639.20x = 1,056,181.20 × 389,322.40
  4. Step 4: Simplify right side
    704,639.20x = 411,194,999,618.88
  5. Step 5: Solve for x
    x = 411,194,999,618.88/704,639.20
  6. Step 6: Final answer
    x = 583,553.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.