Home / 689,912-1,034,872.72-263,332.80

Finding the Fourth Proportional to 689,912, 1,034,872.72 and 263,332.80

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Solution

The fourth proportional to 689,912, 1,034,872.72 and 263,332.80 is: 395,001.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,912 : 1,034,872.72 = 263,332.80 : x
  2. Step 2: Convert to fraction form
    689,912/1,034,872.72 = 263,332.80/x
  3. Step 3: Cross multiply
    689,912x = 1,034,872.72 × 263,332.80
  4. Step 4: Simplify right side
    689,912x = 272,515,931,001.22
  5. Step 5: Solve for x
    x = 272,515,931,001.22/689,912
  6. Step 6: Final answer
    x = 395,001.00

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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.