Home / 742,109.43-1,024,112.99-402,577.68

Finding the Fourth Proportional to 742,109.43, 1,024,112.99 and 402,577.68

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Solution

The fourth proportional to 742,109.43, 1,024,112.99 and 402,577.68 is: 555,558.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,109.43 : 1,024,112.99 = 402,577.68 : x
  2. Step 2: Convert to fraction form
    742,109.43/1,024,112.99 = 402,577.68/x
  3. Step 3: Cross multiply
    742,109.43x = 1,024,112.99 × 402,577.68
  4. Step 4: Simplify right side
    742,109.43x = 412,285,031,572.06
  5. Step 5: Solve for x
    x = 412,285,031,572.06/742,109.43
  6. Step 6: Final answer
    x = 555,558.27

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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.