Home / 554,738.76-765,539.10-300,090.15

Finding the Fourth Proportional to 554,738.76, 765,539.10 and 300,090.15

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Solution

The fourth proportional to 554,738.76, 765,539.10 and 300,090.15 is: 414,124.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,738.76 : 765,539.10 = 300,090.15 : x
  2. Step 2: Convert to fraction form
    554,738.76/765,539.10 = 300,090.15/x
  3. Step 3: Cross multiply
    554,738.76x = 765,539.10 × 300,090.15
  4. Step 4: Simplify right side
    554,738.76x = 229,730,743,349.87
  5. Step 5: Solve for x
    x = 229,730,743,349.87/554,738.76
  6. Step 6: Final answer
    x = 414,124.20

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1.5x scale

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.