Home / 3,120,032.50-4,680,048.75-756,128.50

Finding the Fourth Proportional to 3,120,032.50, 4,680,048.75 and 756,128.50

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Solution

The fourth proportional to 3,120,032.50, 4,680,048.75 and 756,128.50 is: 1,134,192.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,032.50 : 4,680,048.75 = 756,128.50 : x
  2. Step 2: Convert to fraction form
    3,120,032.50/4,680,048.75 = 756,128.50/x
  3. Step 3: Cross multiply
    3,120,032.50x = 4,680,048.75 × 756,128.50
  4. Step 4: Simplify right side
    3,120,032.50x = 3,538,718,241,264.38
  5. Step 5: Solve for x
    x = 3,538,718,241,264.38/3,120,032.50
  6. Step 6: Final answer
    x = 1,134,192.75

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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.