Home / 429,877.31-643,975.16-354,084.66

Finding the Fourth Proportional to 429,877.31, 643,975.16 and 354,084.66

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Solution

The fourth proportional to 429,877.31, 643,975.16 and 354,084.66 is: 530,434.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,877.31 : 643,975.16 = 354,084.66 : x
  2. Step 2: Convert to fraction form
    429,877.31/643,975.16 = 354,084.66/x
  3. Step 3: Cross multiply
    429,877.31x = 643,975.16 × 354,084.66
  4. Step 4: Simplify right side
    429,877.31x = 228,021,725,416.56
  5. Step 5: Solve for x
    x = 228,021,725,416.56/429,877.31
  6. Step 6: Final answer
    x = 530,434.43

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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.