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Finding the Fourth Proportional to 879,504, 1,213,812.72 and 497,527.44

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Solution

The fourth proportional to 879,504, 1,213,812.72 and 497,527.44 is: 686,642.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,504 : 1,213,812.72 = 497,527.44 : x
  2. Step 2: Convert to fraction form
    879,504/1,213,812.72 = 497,527.44/x
  3. Step 3: Cross multiply
    879,504x = 1,213,812.72 × 497,527.44
  4. Step 4: Simplify right side
    879,504x = 603,905,135,221.04
  5. Step 5: Solve for x
    x = 603,905,135,221.04/879,504
  6. Step 6: Final answer
    x = 686,642.85

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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.