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Finding the Fourth Proportional to 553,655.60, 831,467.55 and 404,064.80

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Solution

The fourth proportional to 553,655.60, 831,467.55 and 404,064.80 is: 606,815.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,655.60 : 831,467.55 = 404,064.80 : x
  2. Step 2: Convert to fraction form
    553,655.60/831,467.55 = 404,064.80/x
  3. Step 3: Cross multiply
    553,655.60x = 831,467.55 × 404,064.80
  4. Step 4: Simplify right side
    553,655.60x = 335,966,769,297.24
  5. Step 5: Solve for x
    x = 335,966,769,297.24/553,655.60
  6. Step 6: Final answer
    x = 606,815.45

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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.