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Finding the Fourth Proportional to 520,090.20, 778,407.30 and 377,530.20

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Solution

The fourth proportional to 520,090.20, 778,407.30 and 377,530.20 is: 565,040.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,090.20 : 778,407.30 = 377,530.20 : x
  2. Step 2: Convert to fraction form
    520,090.20/778,407.30 = 377,530.20/x
  3. Step 3: Cross multiply
    520,090.20x = 778,407.30 × 377,530.20
  4. Step 4: Simplify right side
    520,090.20x = 293,872,263,650.46
  5. Step 5: Solve for x
    x = 293,872,263,650.46/520,090.20
  6. Step 6: Final answer
    x = 565,040.96

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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.