Home / 784,736.60-1,177,979.70-430,442.60

Finding the Fourth Proportional to 784,736.60, 1,177,979.70 and 430,442.60

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Solution

The fourth proportional to 784,736.60, 1,177,979.70 and 430,442.60 is: 646,143.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,736.60 : 1,177,979.70 = 430,442.60 : x
  2. Step 2: Convert to fraction form
    784,736.60/1,177,979.70 = 430,442.60/x
  3. Step 3: Cross multiply
    784,736.60x = 1,177,979.70 × 430,442.60
  4. Step 4: Simplify right side
    784,736.60x = 507,052,644,815.22
  5. Step 5: Solve for x
    x = 507,052,644,815.22/784,736.60
  6. Step 6: Final answer
    x = 646,143.74

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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.