Home / 763,457.40-1,145,186.10-480,022.20

Finding the Fourth Proportional to 763,457.40, 1,145,186.10 and 480,022.20

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Solution

The fourth proportional to 763,457.40, 1,145,186.10 and 480,022.20 is: 720,033.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,457.40 : 1,145,186.10 = 480,022.20 : x
  2. Step 2: Convert to fraction form
    763,457.40/1,145,186.10 = 480,022.20/x
  3. Step 3: Cross multiply
    763,457.40x = 1,145,186.10 × 480,022.20
  4. Step 4: Simplify right side
    763,457.40x = 549,714,751,131.42
  5. Step 5: Solve for x
    x = 549,714,751,131.42/763,457.40
  6. Step 6: Final answer
    x = 720,033.30

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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.