Home / 457,915.07-686,642.06-268,420.64

Finding the Fourth Proportional to 457,915.07, 686,642.06 and 268,420.64

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Solution

The fourth proportional to 457,915.07, 686,642.06 and 268,420.64 is: 402,495.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,915.07 : 686,642.06 = 268,420.64 : x
  2. Step 2: Convert to fraction form
    457,915.07/686,642.06 = 268,420.64/x
  3. Step 3: Cross multiply
    457,915.07x = 686,642.06 × 268,420.64
  4. Step 4: Simplify right side
    457,915.07x = 184,308,898,433.96
  5. Step 5: Solve for x
    x = 184,308,898,433.96/457,915.07
  6. Step 6: Final answer
    x = 402,495.81

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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.