Home / 709,339.68-1,062,806.64-428,266.56

Finding the Fourth Proportional to 709,339.68, 1,062,806.64 and 428,266.56

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Solution

The fourth proportional to 709,339.68, 1,062,806.64 and 428,266.56 is: 641,673.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,339.68 : 1,062,806.64 = 428,266.56 : x
  2. Step 2: Convert to fraction form
    709,339.68/1,062,806.64 = 428,266.56/x
  3. Step 3: Cross multiply
    709,339.68x = 1,062,806.64 × 428,266.56
  4. Step 4: Simplify right side
    709,339.68x = 455,164,543,657.96
  5. Step 5: Solve for x
    x = 455,164,543,657.96/709,339.68
  6. Step 6: Final answer
    x = 641,673.60

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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.