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Finding the Fourth Proportional to 498,548.40, 747,822.60 and 399,937.20

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Solution

The fourth proportional to 498,548.40, 747,822.60 and 399,937.20 is: 599,905.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,548.40 : 747,822.60 = 399,937.20 : x
  2. Step 2: Convert to fraction form
    498,548.40/747,822.60 = 399,937.20/x
  3. Step 3: Cross multiply
    498,548.40x = 747,822.60 × 399,937.20
  4. Step 4: Simplify right side
    498,548.40x = 299,082,076,740.72
  5. Step 5: Solve for x
    x = 299,082,076,740.72/498,548.40
  6. Step 6: Final answer
    x = 599,905.80

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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.