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Finding the Fourth Proportional to 691,409.40, 954,144.78 and 373,457.40

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Solution

The fourth proportional to 691,409.40, 954,144.78 and 373,457.40 is: 515,371.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,409.40 : 954,144.78 = 373,457.40 : x
  2. Step 2: Convert to fraction form
    691,409.40/954,144.78 = 373,457.40/x
  3. Step 3: Cross multiply
    691,409.40x = 954,144.78 × 373,457.40
  4. Step 4: Simplify right side
    691,409.40x = 356,332,428,762.37
  5. Step 5: Solve for x
    x = 356,332,428,762.37/691,409.40
  6. Step 6: Final answer
    x = 515,371.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.