Home / 763,506.84-1,145,260.26-290,080.20

Finding the Fourth Proportional to 763,506.84, 1,145,260.26 and 290,080.20

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Solution

The fourth proportional to 763,506.84, 1,145,260.26 and 290,080.20 is: 435,120.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,506.84 : 1,145,260.26 = 290,080.20 : x
  2. Step 2: Convert to fraction form
    763,506.84/1,145,260.26 = 290,080.20/x
  3. Step 3: Cross multiply
    763,506.84x = 1,145,260.26 × 290,080.20
  4. Step 4: Simplify right side
    763,506.84x = 332,217,325,272.85
  5. Step 5: Solve for x
    x = 332,217,325,272.85/763,506.84
  6. Step 6: Final answer
    x = 435,120.30

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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.