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Finding the Fourth Proportional to 626,576.57, 864,652.55 and 340,090.50

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Solution

The fourth proportional to 626,576.57, 864,652.55 and 340,090.50 is: 469,312.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,576.57 : 864,652.55 = 340,090.50 : x
  2. Step 2: Convert to fraction form
    626,576.57/864,652.55 = 340,090.50/x
  3. Step 3: Cross multiply
    626,576.57x = 864,652.55 × 340,090.50
  4. Step 4: Simplify right side
    626,576.57x = 294,060,118,055.78
  5. Step 5: Solve for x
    x = 294,060,118,055.78/626,576.57
  6. Step 6: Final answer
    x = 469,312.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.