Home / 1,239,622.60-1,859,952.30-398,432.20

Finding the Fourth Proportional to 1,239,622.60, 1,859,952.30 and 398,432.20

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Solution

The fourth proportional to 1,239,622.60, 1,859,952.30 and 398,432.20 is: 597,814.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,622.60 : 1,859,952.30 = 398,432.20 : x
  2. Step 2: Convert to fraction form
    1,239,622.60/1,859,952.30 = 398,432.20/x
  3. Step 3: Cross multiply
    1,239,622.60x = 1,859,952.30 × 398,432.20
  4. Step 4: Simplify right side
    1,239,622.60x = 741,064,886,784.06
  5. Step 5: Solve for x
    x = 741,064,886,784.06/1,239,622.60
  6. Step 6: Final answer
    x = 597,814.92

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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.