Home / 739,959.79-1,021,144.50-400,428.04

Finding the Fourth Proportional to 739,959.79, 1,021,144.50 and 400,428.04

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Solution

The fourth proportional to 739,959.79, 1,021,144.50 and 400,428.04 is: 552,590.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,959.79 : 1,021,144.50 = 400,428.04 : x
  2. Step 2: Convert to fraction form
    739,959.79/1,021,144.50 = 400,428.04/x
  3. Step 3: Cross multiply
    739,959.79x = 1,021,144.50 × 400,428.04
  4. Step 4: Simplify right side
    739,959.79x = 408,894,885,586.06
  5. Step 5: Solve for x
    x = 408,894,885,586.06/739,959.79
  6. Step 6: Final answer
    x = 552,590.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.