Home / 742,172.03-1,024,199.38-402,640.28

Finding the Fourth Proportional to 742,172.03, 1,024,199.38 and 402,640.28

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Solution

The fourth proportional to 742,172.03, 1,024,199.38 and 402,640.28 is: 555,644.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,172.03 : 1,024,199.38 = 402,640.28 : x
  2. Step 2: Convert to fraction form
    742,172.03/1,024,199.38 = 402,640.28/x
  3. Step 3: Cross multiply
    742,172.03x = 1,024,199.38 × 402,640.28
  4. Step 4: Simplify right side
    742,172.03x = 412,383,925,139.03
  5. Step 5: Solve for x
    x = 412,383,925,139.03/742,172.03
  6. Step 6: Final answer
    x = 555,644.66

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Double scale
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1.5x scale

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.