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Finding the Fourth Proportional to 474,692.64, 655,264.80 and 311,411.22

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Solution

The fourth proportional to 474,692.64, 655,264.80 and 311,411.22 is: 429,871.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,692.64 : 655,264.80 = 311,411.22 : x
  2. Step 2: Convert to fraction form
    474,692.64/655,264.80 = 311,411.22/x
  3. Step 3: Cross multiply
    474,692.64x = 655,264.80 × 311,411.22
  4. Step 4: Simplify right side
    474,692.64x = 204,056,810,791.06
  5. Step 5: Solve for x
    x = 204,056,810,791.06/474,692.64
  6. Step 6: Final answer
    x = 429,871.44

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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.