Home / 858,310.86-1,287,466.29-457,738.05

Finding the Fourth Proportional to 858,310.86, 1,287,466.29 and 457,738.05

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Solution

The fourth proportional to 858,310.86, 1,287,466.29 and 457,738.05 is: 686,607.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,310.86 : 1,287,466.29 = 457,738.05 : x
  2. Step 2: Convert to fraction form
    858,310.86/1,287,466.29 = 457,738.05/x
  3. Step 3: Cross multiply
    858,310.86x = 1,287,466.29 × 457,738.05
  4. Step 4: Simplify right side
    858,310.86x = 589,322,309,025.34
  5. Step 5: Solve for x
    x = 589,322,309,025.34/858,310.86
  6. Step 6: Final answer
    x = 686,607.08

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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.