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Finding the Fourth Proportional to 575,188.80, 862,783.20 and 323,246.40

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Solution

The fourth proportional to 575,188.80, 862,783.20 and 323,246.40 is: 484,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,188.80 : 862,783.20 = 323,246.40 : x
  2. Step 2: Convert to fraction form
    575,188.80/862,783.20 = 323,246.40/x
  3. Step 3: Cross multiply
    575,188.80x = 862,783.20 × 323,246.40
  4. Step 4: Simplify right side
    575,188.80x = 278,891,563,380.48
  5. Step 5: Solve for x
    x = 278,891,563,380.48/575,188.80
  6. Step 6: Final answer
    x = 484,869.60

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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.