Home / 515,044.80-772,567.20-438,937.20

Finding the Fourth Proportional to 515,044.80, 772,567.20 and 438,937.20

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Solution

The fourth proportional to 515,044.80, 772,567.20 and 438,937.20 is: 658,405.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,044.80 : 772,567.20 = 438,937.20 : x
  2. Step 2: Convert to fraction form
    515,044.80/772,567.20 = 438,937.20/x
  3. Step 3: Cross multiply
    515,044.80x = 772,567.20 × 438,937.20
  4. Step 4: Simplify right side
    515,044.80x = 339,108,483,579.84
  5. Step 5: Solve for x
    x = 339,108,483,579.84/515,044.80
  6. Step 6: Final answer
    x = 658,405.80

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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.