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Finding the Fourth Proportional to 702,649.37, 970,215.14 and 648,914.78

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Solution

The fourth proportional to 702,649.37, 970,215.14 and 648,914.78 is: 896,018.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,649.37 : 970,215.14 = 648,914.78 : x
  2. Step 2: Convert to fraction form
    702,649.37/970,215.14 = 648,914.78/x
  3. Step 3: Cross multiply
    702,649.37x = 970,215.14 × 648,914.78
  4. Step 4: Simplify right side
    702,649.37x = 629,586,948,173.59
  5. Step 5: Solve for x
    x = 629,586,948,173.59/702,649.37
  6. Step 6: Final answer
    x = 896,018.66

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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.