Home / 429,764.40-645,335.10-341,749.80

Finding the Fourth Proportional to 429,764.40, 645,335.10 and 341,749.80

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Solution

The fourth proportional to 429,764.40, 645,335.10 and 341,749.80 is: 513,172.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,764.40 : 645,335.10 = 341,749.80 : x
  2. Step 2: Convert to fraction form
    429,764.40/645,335.10 = 341,749.80/x
  3. Step 3: Cross multiply
    429,764.40x = 645,335.10 × 341,749.80
  4. Step 4: Simplify right side
    429,764.40x = 220,543,141,357.98
  5. Step 5: Solve for x
    x = 220,543,141,357.98/429,764.40
  6. Step 6: Final answer
    x = 513,172.20

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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.