Home / 763,453.90-1,145,180.85-480,018.70

Finding the Fourth Proportional to 763,453.90, 1,145,180.85 and 480,018.70

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Solution

The fourth proportional to 763,453.90, 1,145,180.85 and 480,018.70 is: 720,028.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,453.90 : 1,145,180.85 = 480,018.70 : x
  2. Step 2: Convert to fraction form
    763,453.90/1,145,180.85 = 480,018.70/x
  3. Step 3: Cross multiply
    763,453.90x = 1,145,180.85 × 480,018.70
  4. Step 4: Simplify right side
    763,453.90x = 549,708,222,881.90
  5. Step 5: Solve for x
    x = 549,708,222,881.90/763,453.90
  6. Step 6: Final answer
    x = 720,028.05

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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.