Home / 579,705.20-869,125.80-299,423.60

Finding the Fourth Proportional to 579,705.20, 869,125.80 and 299,423.60

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Solution

The fourth proportional to 579,705.20, 869,125.80 and 299,423.60 is: 448,912.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,705.20 : 869,125.80 = 299,423.60 : x
  2. Step 2: Convert to fraction form
    579,705.20/869,125.80 = 299,423.60/x
  3. Step 3: Cross multiply
    579,705.20x = 869,125.80 × 299,423.60
  4. Step 4: Simplify right side
    579,705.20x = 260,236,775,888.88
  5. Step 5: Solve for x
    x = 260,236,775,888.88/579,705.20
  6. Step 6: Final answer
    x = 448,912.27

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1.5x scale

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.