Home / 742,731.75-1,024,982.28-403,200

Finding the Fourth Proportional to 742,731.75, 1,024,982.28 and 403,200

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Solution

The fourth proportional to 742,731.75, 1,024,982.28 and 403,200 is: 556,422.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,731.75 : 1,024,982.28 = 403,200 : x
  2. Step 2: Convert to fraction form
    742,731.75/1,024,982.28 = 403,200/x
  3. Step 3: Cross multiply
    742,731.75x = 1,024,982.28 × 403,200
  4. Step 4: Simplify right side
    742,731.75x = 413,272,855,296
  5. Step 5: Solve for x
    x = 413,272,855,296/742,731.75
  6. Step 6: Final answer
    x = 556,422.77

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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.