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Finding the Fourth Proportional to 867,450.72, 1,301,487.24 and 387,638.30

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Solution

The fourth proportional to 867,450.72, 1,301,487.24 and 387,638.30 is: 581,596.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,450.72 : 1,301,487.24 = 387,638.30 : x
  2. Step 2: Convert to fraction form
    867,450.72/1,301,487.24 = 387,638.30/x
  3. Step 3: Cross multiply
    867,450.72x = 1,301,487.24 × 387,638.30
  4. Step 4: Simplify right side
    867,450.72x = 504,506,301,185.29
  5. Step 5: Solve for x
    x = 504,506,301,185.29/867,450.72
  6. Step 6: Final answer
    x = 581,596.50

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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.