Home / 429,923.88-644,887.32-130,407.03

Finding the Fourth Proportional to 429,923.88, 644,887.32 and 130,407.03

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Solution

The fourth proportional to 429,923.88, 644,887.32 and 130,407.03 is: 195,611.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,923.88 : 644,887.32 = 130,407.03 : x
  2. Step 2: Convert to fraction form
    429,923.88/644,887.32 = 130,407.03/x
  3. Step 3: Cross multiply
    429,923.88x = 644,887.32 × 130,407.03
  4. Step 4: Simplify right side
    429,923.88x = 84,097,840,085.86
  5. Step 5: Solve for x
    x = 84,097,840,085.86/429,923.88
  6. Step 6: Final answer
    x = 195,611.00

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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.