Home / 721,096.89-1,081,329.76-342,125.66

Finding the Fourth Proportional to 721,096.89, 1,081,329.76 and 342,125.66

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Solution

The fourth proportional to 721,096.89, 1,081,329.76 and 342,125.66 is: 513,038.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,096.89 : 1,081,329.76 = 342,125.66 : x
  2. Step 2: Convert to fraction form
    721,096.89/1,081,329.76 = 342,125.66/x
  3. Step 3: Cross multiply
    721,096.89x = 1,081,329.76 × 342,125.66
  4. Step 4: Simplify right side
    721,096.89x = 369,950,657,817.64
  5. Step 5: Solve for x
    x = 369,950,657,817.64/721,096.89
  6. Step 6: Final answer
    x = 513,038.76

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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.