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Finding the Fourth Proportional to 536,469.30, 804,703.95 and 287,637.30

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Solution

The fourth proportional to 536,469.30, 804,703.95 and 287,637.30 is: 431,455.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,469.30 : 804,703.95 = 287,637.30 : x
  2. Step 2: Convert to fraction form
    536,469.30/804,703.95 = 287,637.30/x
  3. Step 3: Cross multiply
    536,469.30x = 804,703.95 × 287,637.30
  4. Step 4: Simplify right side
    536,469.30x = 231,462,871,477.34
  5. Step 5: Solve for x
    x = 231,462,871,477.34/536,469.30
  6. Step 6: Final answer
    x = 431,455.95

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Double scale
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Similar ratio
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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.