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Finding the Fourth Proportional to 575,455.20, 863,182.80 and 520,342.80

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Solution

The fourth proportional to 575,455.20, 863,182.80 and 520,342.80 is: 780,514.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,455.20 : 863,182.80 = 520,342.80 : x
  2. Step 2: Convert to fraction form
    575,455.20/863,182.80 = 520,342.80/x
  3. Step 3: Cross multiply
    575,455.20x = 863,182.80 × 520,342.80
  4. Step 4: Simplify right side
    575,455.20x = 449,150,955,063.84
  5. Step 5: Solve for x
    x = 449,150,955,063.84/575,455.20
  6. Step 6: Final answer
    x = 780,514.20

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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.