Home / 705,298.20-1,058,400.90-389,981.40

Finding the Fourth Proportional to 705,298.20, 1,058,400.90 and 389,981.40

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Solution

The fourth proportional to 705,298.20, 1,058,400.90 and 389,981.40 is: 585,222.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,298.20 : 1,058,400.90 = 389,981.40 : x
  2. Step 2: Convert to fraction form
    705,298.20/1,058,400.90 = 389,981.40/x
  3. Step 3: Cross multiply
    705,298.20x = 1,058,400.90 × 389,981.40
  4. Step 4: Simplify right side
    705,298.20x = 412,756,664,743.26
  5. Step 5: Solve for x
    x = 412,756,664,743.26/705,298.20
  6. Step 6: Final answer
    x = 585,222.91

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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.