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Finding the Fourth Proportional to 575,816.70, 863,725.05 and 520,704.30

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Solution

The fourth proportional to 575,816.70, 863,725.05 and 520,704.30 is: 781,056.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,816.70 : 863,725.05 = 520,704.30 : x
  2. Step 2: Convert to fraction form
    575,816.70/863,725.05 = 520,704.30/x
  3. Step 3: Cross multiply
    575,816.70x = 863,725.05 × 520,704.30
  4. Step 4: Simplify right side
    575,816.70x = 449,745,347,552.72
  5. Step 5: Solve for x
    x = 449,745,347,552.72/575,816.70
  6. Step 6: Final answer
    x = 781,056.45

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Double scale
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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.