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Finding the Fourth Proportional to 554,415.60, 831,623.40 and 498,428.40

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Solution

The fourth proportional to 554,415.60, 831,623.40 and 498,428.40 is: 747,642.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,415.60 : 831,623.40 = 498,428.40 : x
  2. Step 2: Convert to fraction form
    554,415.60/831,623.40 = 498,428.40/x
  3. Step 3: Cross multiply
    554,415.60x = 831,623.40 × 498,428.40
  4. Step 4: Simplify right side
    554,415.60x = 414,504,720,664.56
  5. Step 5: Solve for x
    x = 414,504,720,664.56/554,415.60
  6. Step 6: Final answer
    x = 747,642.60

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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.