Home / 910,939.70-1,366,409.55-319,963.70

Finding the Fourth Proportional to 910,939.70, 1,366,409.55 and 319,963.70

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Solution

The fourth proportional to 910,939.70, 1,366,409.55 and 319,963.70 is: 479,945.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,939.70 : 1,366,409.55 = 319,963.70 : x
  2. Step 2: Convert to fraction form
    910,939.70/1,366,409.55 = 319,963.70/x
  3. Step 3: Cross multiply
    910,939.70x = 1,366,409.55 × 319,963.70
  4. Step 4: Simplify right side
    910,939.70x = 437,201,455,333.34
  5. Step 5: Solve for x
    x = 437,201,455,333.34/910,939.70
  6. Step 6: Final answer
    x = 479,945.55

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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.