Home / 579,908.20-869,862.30-402,761.20

Finding the Fourth Proportional to 579,908.20, 869,862.30 and 402,761.20

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Solution

The fourth proportional to 579,908.20, 869,862.30 and 402,761.20 is: 604,141.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,908.20 : 869,862.30 = 402,761.20 : x
  2. Step 2: Convert to fraction form
    579,908.20/869,862.30 = 402,761.20/x
  3. Step 3: Cross multiply
    579,908.20x = 869,862.30 × 402,761.20
  4. Step 4: Simplify right side
    579,908.20x = 350,346,783,782.76
  5. Step 5: Solve for x
    x = 350,346,783,782.76/579,908.20
  6. Step 6: Final answer
    x = 604,141.80

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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.