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Finding the Fourth Proportional to 702,976.88, 970,110.76 and 380,687.12

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Solution

The fourth proportional to 702,976.88, 970,110.76 and 380,687.12 is: 525,349.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,976.88 : 970,110.76 = 380,687.12 : x
  2. Step 2: Convert to fraction form
    702,976.88/970,110.76 = 380,687.12/x
  3. Step 3: Cross multiply
    702,976.88x = 970,110.76 × 380,687.12
  4. Step 4: Simplify right side
    702,976.88x = 369,308,671,305.41
  5. Step 5: Solve for x
    x = 369,308,671,305.41/702,976.88
  6. Step 6: Final answer
    x = 525,349.67

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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.