Home / 429,926.19-644,890.77-130,409.34

Finding the Fourth Proportional to 429,926.19, 644,890.77 and 130,409.34

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Solution

The fourth proportional to 429,926.19, 644,890.77 and 130,409.34 is: 195,614.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,926.19 : 644,890.77 = 130,409.34 : x
  2. Step 2: Convert to fraction form
    429,926.19/644,890.77 = 130,409.34/x
  3. Step 3: Cross multiply
    429,926.19x = 644,890.77 × 130,409.34
  4. Step 4: Simplify right side
    429,926.19x = 84,099,779,687.79
  5. Step 5: Solve for x
    x = 84,099,779,687.79/429,926.19
  6. Step 6: Final answer
    x = 195,614.46

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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.