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Finding the Fourth Proportional to 839,665.72, 1,158,750.75 and 457,692.49

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Solution

The fourth proportional to 839,665.72, 1,158,750.75 and 457,692.49 is: 631,622.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,665.72 : 1,158,750.75 = 457,692.49 : x
  2. Step 2: Convert to fraction form
    839,665.72/1,158,750.75 = 457,692.49/x
  3. Step 3: Cross multiply
    839,665.72x = 1,158,750.75 × 457,692.49
  4. Step 4: Simplify right side
    839,665.72x = 530,351,516,056.87
  5. Step 5: Solve for x
    x = 530,351,516,056.87/839,665.72
  6. Step 6: Final answer
    x = 631,622.21

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1.5x scale

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.