Home / 742,711.48-1,024,944.92-420,483.76

Finding the Fourth Proportional to 742,711.48, 1,024,944.92 and 420,483.76

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Solution

The fourth proportional to 742,711.48, 1,024,944.92 and 420,483.76 is: 580,269.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,711.48 : 1,024,944.92 = 420,483.76 : x
  2. Step 2: Convert to fraction form
    742,711.48/1,024,944.92 = 420,483.76/x
  3. Step 3: Cross multiply
    742,711.48x = 1,024,944.92 × 420,483.76
  4. Step 4: Simplify right side
    742,711.48x = 430,972,693,754.50
  5. Step 5: Solve for x
    x = 430,972,693,754.50/742,711.48
  6. Step 6: Final answer
    x = 580,269.33

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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.