Home / 609,216.22-912,784.29-431,427.70

Finding the Fourth Proportional to 609,216.22, 912,784.29 and 431,427.70

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Solution

The fourth proportional to 609,216.22, 912,784.29 and 431,427.70 is: 646,405.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,216.22 : 912,784.29 = 431,427.70 : x
  2. Step 2: Convert to fraction form
    609,216.22/912,784.29 = 431,427.70/x
  3. Step 3: Cross multiply
    609,216.22x = 912,784.29 × 431,427.70
  4. Step 4: Simplify right side
    609,216.22x = 393,800,426,830.83
  5. Step 5: Solve for x
    x = 393,800,426,830.83/609,216.22
  6. Step 6: Final answer
    x = 646,405.03

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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.