Home / 447,080.48-618,595.68-389,839.16

Finding the Fourth Proportional to 447,080.48, 618,595.68 and 389,839.16

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Solution

The fourth proportional to 447,080.48, 618,595.68 and 389,839.16 is: 539,394.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,080.48 : 618,595.68 = 389,839.16 : x
  2. Step 2: Convert to fraction form
    447,080.48/618,595.68 = 389,839.16/x
  3. Step 3: Cross multiply
    447,080.48x = 618,595.68 × 389,839.16
  4. Step 4: Simplify right side
    447,080.48x = 241,152,823,279.22
  5. Step 5: Solve for x
    x = 241,152,823,279.22/447,080.48
  6. Step 6: Final answer
    x = 539,394.66

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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.