Home / 859,678.12-1,186,464.90-520,149.16

Finding the Fourth Proportional to 859,678.12, 1,186,464.90 and 520,149.16

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Solution

The fourth proportional to 859,678.12, 1,186,464.90 and 520,149.16 is: 717,871.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,678.12 : 1,186,464.90 = 520,149.16 : x
  2. Step 2: Convert to fraction form
    859,678.12/1,186,464.90 = 520,149.16/x
  3. Step 3: Cross multiply
    859,678.12x = 1,186,464.90 × 520,149.16
  4. Step 4: Simplify right side
    859,678.12x = 617,138,721,104.48
  5. Step 5: Solve for x
    x = 617,138,721,104.48/859,678.12
  6. Step 6: Final answer
    x = 717,871.85

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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.