Home / 709,530.20-1,062,912.90-428,211.80

Finding the Fourth Proportional to 709,530.20, 1,062,912.90 and 428,211.80

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Solution

The fourth proportional to 709,530.20, 1,062,912.90 and 428,211.80 is: 641,483.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,530.20 : 1,062,912.90 = 428,211.80 : x
  2. Step 2: Convert to fraction form
    709,530.20/1,062,912.90 = 428,211.80/x
  3. Step 3: Cross multiply
    709,530.20x = 1,062,912.90 × 428,211.80
  4. Step 4: Simplify right side
    709,530.20x = 455,151,846,152.22
  5. Step 5: Solve for x
    x = 455,151,846,152.22/709,530.20
  6. Step 6: Final answer
    x = 641,483.40

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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.