Home / 970,128.20-1,455,192.30-305,280.20

Finding the Fourth Proportional to 970,128.20, 1,455,192.30 and 305,280.20

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Solution

The fourth proportional to 970,128.20, 1,455,192.30 and 305,280.20 is: 457,920.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,128.20 : 1,455,192.30 = 305,280.20 : x
  2. Step 2: Convert to fraction form
    970,128.20/1,455,192.30 = 305,280.20/x
  3. Step 3: Cross multiply
    970,128.20x = 1,455,192.30 × 305,280.20
  4. Step 4: Simplify right side
    970,128.20x = 444,241,396,382.46
  5. Step 5: Solve for x
    x = 444,241,396,382.46/970,128.20
  6. Step 6: Final answer
    x = 457,920.30

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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.