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Finding the Fourth Proportional to 455,887.40, 683,831.10 and 403,399.40

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Solution

The fourth proportional to 455,887.40, 683,831.10 and 403,399.40 is: 605,099.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,887.40 : 683,831.10 = 403,399.40 : x
  2. Step 2: Convert to fraction form
    455,887.40/683,831.10 = 403,399.40/x
  3. Step 3: Cross multiply
    455,887.40x = 683,831.10 × 403,399.40
  4. Step 4: Simplify right side
    455,887.40x = 275,857,055,441.34
  5. Step 5: Solve for x
    x = 275,857,055,441.34/455,887.40
  6. Step 6: Final answer
    x = 605,099.10

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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.