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Finding the Fourth Proportional to 553,715.80, 831,495.30 and 304,576.60

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Solution

The fourth proportional to 553,715.80, 831,495.30 and 304,576.60 is: 457,371.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,715.80 : 831,495.30 = 304,576.60 : x
  2. Step 2: Convert to fraction form
    553,715.80/831,495.30 = 304,576.60/x
  3. Step 3: Cross multiply
    553,715.80x = 831,495.30 × 304,576.60
  4. Step 4: Simplify right side
    553,715.80x = 253,254,011,389.98
  5. Step 5: Solve for x
    x = 253,254,011,389.98/553,715.80
  6. Step 6: Final answer
    x = 457,371.83

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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.