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Finding the Fourth Proportional to 518,009.55, 777,014.33 and 378,041.55

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Solution

The fourth proportional to 518,009.55, 777,014.33 and 378,041.55 is: 567,062.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,009.55 : 777,014.33 = 378,041.55 : x
  2. Step 2: Convert to fraction form
    518,009.55/777,014.33 = 378,041.55/x
  3. Step 3: Cross multiply
    518,009.55x = 777,014.33 × 378,041.55
  4. Step 4: Simplify right side
    518,009.55x = 293,743,699,795.20
  5. Step 5: Solve for x
    x = 293,743,699,795.20/518,009.55
  6. Step 6: Final answer
    x = 567,062.33

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Similar ratio
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1.5x scale

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.