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Finding the Fourth Proportional to 939,312, 1,296,250.56 and 536,912.64

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Solution

The fourth proportional to 939,312, 1,296,250.56 and 536,912.64 is: 740,939.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,312 : 1,296,250.56 = 536,912.64 : x
  2. Step 2: Convert to fraction form
    939,312/1,296,250.56 = 536,912.64/x
  3. Step 3: Cross multiply
    939,312x = 1,296,250.56 × 536,912.64
  4. Step 4: Simplify right side
    939,312x = 695,973,310,271.08
  5. Step 5: Solve for x
    x = 695,973,310,271.08/939,312
  6. Step 6: Final answer
    x = 740,939.44

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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.