Home / 936,830.77-1,405,035.88-430,905.78

Finding the Fourth Proportional to 936,830.77, 1,405,035.88 and 430,905.78

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Solution

The fourth proportional to 936,830.77, 1,405,035.88 and 430,905.78 is: 646,261.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    936,830.77 : 1,405,035.88 = 430,905.78 : x
  2. Step 2: Convert to fraction form
    936,830.77/1,405,035.88 = 430,905.78/x
  3. Step 3: Cross multiply
    936,830.77x = 1,405,035.88 × 430,905.78
  4. Step 4: Simplify right side
    936,830.77x = 605,438,080,722.12
  5. Step 5: Solve for x
    x = 605,438,080,722.12/936,830.77
  6. Step 6: Final answer
    x = 646,261.95

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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.