Home / 548,829.50-823,239.51-428,987.13

Finding the Fourth Proportional to 548,829.50, 823,239.51 and 428,987.13

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Solution

The fourth proportional to 548,829.50, 823,239.51 and 428,987.13 is: 643,477.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,829.50 : 823,239.51 = 428,987.13 : x
  2. Step 2: Convert to fraction form
    548,829.50/823,239.51 = 428,987.13/x
  3. Step 3: Cross multiply
    548,829.50x = 823,239.51 × 428,987.13
  4. Step 4: Simplify right side
    548,829.50x = 353,159,154,697.51
  5. Step 5: Solve for x
    x = 353,159,154,697.51/548,829.50
  6. Step 6: Final answer
    x = 643,477.00

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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.