Home / 742,328.19-1,024,145.46-420,034.86

Finding the Fourth Proportional to 742,328.19, 1,024,145.46 and 420,034.86

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Solution

The fourth proportional to 742,328.19, 1,024,145.46 and 420,034.86 is: 579,496.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,328.19 : 1,024,145.46 = 420,034.86 : x
  2. Step 2: Convert to fraction form
    742,328.19/1,024,145.46 = 420,034.86/x
  3. Step 3: Cross multiply
    742,328.19x = 1,024,145.46 × 420,034.86
  4. Step 4: Simplify right side
    742,328.19x = 430,176,794,910.74
  5. Step 5: Solve for x
    x = 430,176,794,910.74/742,328.19
  6. Step 6: Final answer
    x = 579,496.78

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Double scale
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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.