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Finding the Fourth Proportional to 864,692.75, 1,299,007.43 and 625,544.30

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Solution

The fourth proportional to 864,692.75, 1,299,007.43 and 625,544.30 is: 939,740.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,692.75 : 1,299,007.43 = 625,544.30 : x
  2. Step 2: Convert to fraction form
    864,692.75/1,299,007.43 = 625,544.30/x
  3. Step 3: Cross multiply
    864,692.75x = 1,299,007.43 × 625,544.30
  4. Step 4: Simplify right side
    864,692.75x = 812,586,683,871.39
  5. Step 5: Solve for x
    x = 812,586,683,871.39/864,692.75
  6. Step 6: Final answer
    x = 939,740.37

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1.5x scale

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.