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Finding the Fourth Proportional to 710,999.10, 980,313.03 and 669,786.30

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Solution

The fourth proportional to 710,999.10, 980,313.03 and 669,786.30 is: 923,489.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,999.10 : 980,313.03 = 669,786.30 : x
  2. Step 2: Convert to fraction form
    710,999.10/980,313.03 = 669,786.30/x
  3. Step 3: Cross multiply
    710,999.10x = 980,313.03 × 669,786.30
  4. Step 4: Simplify right side
    710,999.10x = 656,600,237,205.49
  5. Step 5: Solve for x
    x = 656,600,237,205.49/710,999.10
  6. Step 6: Final answer
    x = 923,489.55

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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.