Home / 1,025,408.58-1,538,116.65-315,431.70

Finding the Fourth Proportional to 1,025,408.58, 1,538,116.65 and 315,431.70

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Solution

The fourth proportional to 1,025,408.58, 1,538,116.65 and 315,431.70 is: 473,148.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,025,408.58 : 1,538,116.65 = 315,431.70 : x
  2. Step 2: Convert to fraction form
    1,025,408.58/1,538,116.65 = 315,431.70/x
  3. Step 3: Cross multiply
    1,025,408.58x = 1,538,116.65 × 315,431.70
  4. Step 4: Simplify right side
    1,025,408.58x = 485,170,749,707.81
  5. Step 5: Solve for x
    x = 485,170,749,707.81/1,025,408.58
  6. Step 6: Final answer
    x = 473,148.71

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.