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Finding the Fourth Proportional to 553,659.10, 831,472.80 and 404,068.30

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Solution

The fourth proportional to 553,659.10, 831,472.80 and 404,068.30 is: 606,820.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,659.10 : 831,472.80 = 404,068.30 : x
  2. Step 2: Convert to fraction form
    553,659.10/831,472.80 = 404,068.30/x
  3. Step 3: Cross multiply
    553,659.10x = 831,472.80 × 404,068.30
  4. Step 4: Simplify right side
    553,659.10x = 335,971,800,792.24
  5. Step 5: Solve for x
    x = 335,971,800,792.24/553,659.10
  6. Step 6: Final answer
    x = 606,820.70

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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.