Home / 1,220,474.92-1,830,835.40-321,978.76

Finding the Fourth Proportional to 1,220,474.92, 1,830,835.40 and 321,978.76

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Solution

The fourth proportional to 1,220,474.92, 1,830,835.40 and 321,978.76 is: 483,000.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,474.92 : 1,830,835.40 = 321,978.76 : x
  2. Step 2: Convert to fraction form
    1,220,474.92/1,830,835.40 = 321,978.76/x
  3. Step 3: Cross multiply
    1,220,474.92x = 1,830,835.40 × 321,978.76
  4. Step 4: Simplify right side
    1,220,474.92x = 589,490,111,856.10
  5. Step 5: Solve for x
    x = 589,490,111,856.10/1,220,474.92
  6. Step 6: Final answer
    x = 483,000.59

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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.