Home / 742,421.66-1,024,542.54-402,889.91

Finding the Fourth Proportional to 742,421.66, 1,024,542.54 and 402,889.91

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Solution

The fourth proportional to 742,421.66, 1,024,542.54 and 402,889.91 is: 555,988.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,421.66 : 1,024,542.54 = 402,889.91 : x
  2. Step 2: Convert to fraction form
    742,421.66/1,024,542.54 = 402,889.91/x
  3. Step 3: Cross multiply
    742,421.66x = 1,024,542.54 × 402,889.91
  4. Step 4: Simplify right side
    742,421.66x = 412,777,846,609.06
  5. Step 5: Solve for x
    x = 412,777,846,609.06/742,421.66
  6. Step 6: Final answer
    x = 555,988.42

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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.