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Finding the Fourth Proportional to 631,840.40, 945,917.40 and 613,408.40

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Solution

The fourth proportional to 631,840.40, 945,917.40 and 613,408.40 is: 918,323.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,840.40 : 945,917.40 = 613,408.40 : x
  2. Step 2: Convert to fraction form
    631,840.40/945,917.40 = 613,408.40/x
  3. Step 3: Cross multiply
    631,840.40x = 945,917.40 × 613,408.40
  4. Step 4: Simplify right side
    631,840.40x = 580,233,678,866.16
  5. Step 5: Solve for x
    x = 580,233,678,866.16/631,840.40
  6. Step 6: Final answer
    x = 918,323.17

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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.