Home / 705,307.20-1,058,414.40-389,990.40

Finding the Fourth Proportional to 705,307.20, 1,058,414.40 and 389,990.40

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Solution

The fourth proportional to 705,307.20, 1,058,414.40 and 389,990.40 is: 585,236.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,307.20 : 1,058,414.40 = 389,990.40 : x
  2. Step 2: Convert to fraction form
    705,307.20/1,058,414.40 = 389,990.40/x
  3. Step 3: Cross multiply
    705,307.20x = 1,058,414.40 × 389,990.40
  4. Step 4: Simplify right side
    705,307.20x = 412,771,455,221.76
  5. Step 5: Solve for x
    x = 412,771,455,221.76/705,307.20
  6. Step 6: Final answer
    x = 585,236.41

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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.