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Finding the Fourth Proportional to 631,842.40, 945,920.40 and 613,410.40

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Solution

The fourth proportional to 631,842.40, 945,920.40 and 613,410.40 is: 918,326.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,842.40 : 945,920.40 = 613,410.40 : x
  2. Step 2: Convert to fraction form
    631,842.40/945,920.40 = 613,410.40/x
  3. Step 3: Cross multiply
    631,842.40x = 945,920.40 × 613,410.40
  4. Step 4: Simplify right side
    631,842.40x = 580,237,410,932.16
  5. Step 5: Solve for x
    x = 580,237,410,932.16/631,842.40
  6. Step 6: Final answer
    x = 918,326.17

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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.