Home / 742,109.52-1,024,111.36-419,812.80

Finding the Fourth Proportional to 742,109.52, 1,024,111.36 and 419,812.80

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Solution

The fourth proportional to 742,109.52, 1,024,111.36 and 419,812.80 is: 579,341.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,109.52 : 1,024,111.36 = 419,812.80 : x
  2. Step 2: Convert to fraction form
    742,109.52/1,024,111.36 = 419,812.80/x
  3. Step 3: Cross multiply
    742,109.52x = 1,024,111.36 × 419,812.80
  4. Step 4: Simplify right side
    742,109.52x = 429,935,057,553.41
  5. Step 5: Solve for x
    x = 429,935,057,553.41/742,109.52
  6. Step 6: Final answer
    x = 579,341.79

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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.