Home / 430,827.88-645,238.62-415,880.68

Finding the Fourth Proportional to 430,827.88, 645,238.62 and 415,880.68

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Solution

The fourth proportional to 430,827.88, 645,238.62 and 415,880.68 is: 622,852.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,827.88 : 645,238.62 = 415,880.68 : x
  2. Step 2: Convert to fraction form
    430,827.88/645,238.62 = 415,880.68/x
  3. Step 3: Cross multiply
    430,827.88x = 645,238.62 × 415,880.68
  4. Step 4: Simplify right side
    430,827.88x = 268,342,276,047.86
  5. Step 5: Solve for x
    x = 268,342,276,047.86/430,827.88
  6. Step 6: Final answer
    x = 622,852.63

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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.