Home / 985,476.30-1,478,214.45-320,628.30

Finding the Fourth Proportional to 985,476.30, 1,478,214.45 and 320,628.30

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Solution

The fourth proportional to 985,476.30, 1,478,214.45 and 320,628.30 is: 480,942.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,476.30 : 1,478,214.45 = 320,628.30 : x
  2. Step 2: Convert to fraction form
    985,476.30/1,478,214.45 = 320,628.30/x
  3. Step 3: Cross multiply
    985,476.30x = 1,478,214.45 × 320,628.30
  4. Step 4: Simplify right side
    985,476.30x = 473,957,386,138.94
  5. Step 5: Solve for x
    x = 473,957,386,138.94/985,476.30
  6. Step 6: Final answer
    x = 480,942.45

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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.