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Finding the Fourth Proportional to 553,657.10, 831,469.80 and 404,066.30

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Solution

The fourth proportional to 553,657.10, 831,469.80 and 404,066.30 is: 606,817.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,657.10 : 831,469.80 = 404,066.30 : x
  2. Step 2: Convert to fraction form
    553,657.10/831,469.80 = 404,066.30/x
  3. Step 3: Cross multiply
    553,657.10x = 831,469.80 × 404,066.30
  4. Step 4: Simplify right side
    553,657.10x = 335,968,925,647.74
  5. Step 5: Solve for x
    x = 335,968,925,647.74/553,657.10
  6. Step 6: Final answer
    x = 606,817.70

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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.