Home / 669,390.40-1,004,085.60-314,649.28

Finding the Fourth Proportional to 669,390.40, 1,004,085.60 and 314,649.28

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Solution

The fourth proportional to 669,390.40, 1,004,085.60 and 314,649.28 is: 471,973.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,390.40 : 1,004,085.60 = 314,649.28 : x
  2. Step 2: Convert to fraction form
    669,390.40/1,004,085.60 = 314,649.28/x
  3. Step 3: Cross multiply
    669,390.40x = 1,004,085.60 × 314,649.28
  4. Step 4: Simplify right side
    669,390.40x = 315,934,811,098.37
  5. Step 5: Solve for x
    x = 315,934,811,098.37/669,390.40
  6. Step 6: Final answer
    x = 471,973.92

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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.