Home / 668,420.60-1,003,615.05-518,829.80

Finding the Fourth Proportional to 668,420.60, 1,003,615.05 and 518,829.80

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Solution

The fourth proportional to 668,420.60, 1,003,615.05 and 518,829.80 is: 779,008.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,420.60 : 1,003,615.05 = 518,829.80 : x
  2. Step 2: Convert to fraction form
    668,420.60/1,003,615.05 = 518,829.80/x
  3. Step 3: Cross multiply
    668,420.60x = 1,003,615.05 × 518,829.80
  4. Step 4: Simplify right side
    668,420.60x = 520,705,395,668.49
  5. Step 5: Solve for x
    x = 520,705,395,668.49/668,420.60
  6. Step 6: Final answer
    x = 779,008.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.