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Finding the Fourth Proportional to 867,114.64, 1,300,556.88 and 393,691.12

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Solution

The fourth proportional to 867,114.64, 1,300,556.88 and 393,691.12 is: 590,484.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,114.64 : 1,300,556.88 = 393,691.12 : x
  2. Step 2: Convert to fraction form
    867,114.64/1,300,556.88 = 393,691.12/x
  3. Step 3: Cross multiply
    867,114.64x = 1,300,556.88 × 393,691.12
  4. Step 4: Simplify right side
    867,114.64x = 512,017,694,710.91
  5. Step 5: Solve for x
    x = 512,017,694,710.91/867,114.64
  6. Step 6: Final answer
    x = 590,484.43

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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.