Home / 639,020.68-882,142.07-551,457.45

Finding the Fourth Proportional to 639,020.68, 882,142.07 and 551,457.45

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Solution

The fourth proportional to 639,020.68, 882,142.07 and 551,457.45 is: 761,264.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,020.68 : 882,142.07 = 551,457.45 : x
  2. Step 2: Convert to fraction form
    639,020.68/882,142.07 = 551,457.45/x
  3. Step 3: Cross multiply
    639,020.68x = 882,142.07 × 551,457.45
  4. Step 4: Simplify right side
    639,020.68x = 486,463,816,459.92
  5. Step 5: Solve for x
    x = 486,463,816,459.92/639,020.68
  6. Step 6: Final answer
    x = 761,264.59

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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.