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Finding the Fourth Proportional to 703,059.20, 970,220.86 and 380,769.11

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Solution

The fourth proportional to 703,059.20, 970,220.86 and 380,769.11 is: 525,460.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,059.20 : 970,220.86 = 380,769.11 : x
  2. Step 2: Convert to fraction form
    703,059.20/970,220.86 = 380,769.11/x
  3. Step 3: Cross multiply
    703,059.20x = 970,220.86 × 380,769.11
  4. Step 4: Simplify right side
    703,059.20x = 369,430,127,562.61
  5. Step 5: Solve for x
    x = 369,430,127,562.61/703,059.20
  6. Step 6: Final answer
    x = 525,460.91

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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.