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Finding the Fourth Proportional to 482,777.40, 724,295.70 and 430,548.60

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Solution

The fourth proportional to 482,777.40, 724,295.70 and 430,548.60 is: 645,938.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,777.40 : 724,295.70 = 430,548.60 : x
  2. Step 2: Convert to fraction form
    482,777.40/724,295.70 = 430,548.60/x
  3. Step 3: Cross multiply
    482,777.40x = 724,295.70 × 430,548.60
  4. Step 4: Simplify right side
    482,777.40x = 311,844,499,621.02
  5. Step 5: Solve for x
    x = 311,844,499,621.02/482,777.40
  6. Step 6: Final answer
    x = 645,938.48

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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.