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Finding the Fourth Proportional to 554,411.60, 831,617.40 and 343,365.20

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Solution

The fourth proportional to 554,411.60, 831,617.40 and 343,365.20 is: 515,047.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,411.60 : 831,617.40 = 343,365.20 : x
  2. Step 2: Convert to fraction form
    554,411.60/831,617.40 = 343,365.20/x
  3. Step 3: Cross multiply
    554,411.60x = 831,617.40 × 343,365.20
  4. Step 4: Simplify right side
    554,411.60x = 285,548,474,874.48
  5. Step 5: Solve for x
    x = 285,548,474,874.48/554,411.60
  6. Step 6: Final answer
    x = 515,047.80

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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.