Home / 643,707.41-888,110.73-371,739.38

Finding the Fourth Proportional to 643,707.41, 888,110.73 and 371,739.38

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Solution

The fourth proportional to 643,707.41, 888,110.73 and 371,739.38 is: 512,881.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,707.41 : 888,110.73 = 371,739.38 : x
  2. Step 2: Convert to fraction form
    643,707.41/888,110.73 = 371,739.38/x
  3. Step 3: Cross multiply
    643,707.41x = 888,110.73 × 371,739.38
  4. Step 4: Simplify right side
    643,707.41x = 330,145,727,700.99
  5. Step 5: Solve for x
    x = 330,145,727,700.99/643,707.41
  6. Step 6: Final answer
    x = 512,881.67

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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.