Home / 742,612.54-1,024,629.60-420,322.60

Finding the Fourth Proportional to 742,612.54, 1,024,629.60 and 420,322.60

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Solution

The fourth proportional to 742,612.54, 1,024,629.60 and 420,322.60 is: 579,945.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,612.54 : 1,024,629.60 = 420,322.60 : x
  2. Step 2: Convert to fraction form
    742,612.54/1,024,629.60 = 420,322.60/x
  3. Step 3: Cross multiply
    742,612.54x = 1,024,629.60 × 420,322.60
  4. Step 4: Simplify right side
    742,612.54x = 430,674,977,508.96
  5. Step 5: Solve for x
    x = 430,674,977,508.96/742,612.54
  6. Step 6: Final answer
    x = 579,945.74

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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.