Home / 742,108.43-1,024,111.61-402,576.68

Finding the Fourth Proportional to 742,108.43, 1,024,111.61 and 402,576.68

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Solution

The fourth proportional to 742,108.43, 1,024,111.61 and 402,576.68 is: 555,556.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,108.43 : 1,024,111.61 = 402,576.68 : x
  2. Step 2: Convert to fraction form
    742,108.43/1,024,111.61 = 402,576.68/x
  3. Step 3: Cross multiply
    742,108.43x = 1,024,111.61 × 402,576.68
  4. Step 4: Simplify right side
    742,108.43x = 412,283,444,769.81
  5. Step 5: Solve for x
    x = 412,283,444,769.81/742,108.43
  6. Step 6: Final answer
    x = 555,556.88

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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.