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Finding the Fourth Proportional to 555,424.12, 765,958.75 and 383,066.65

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Solution

The fourth proportional to 555,424.12, 765,958.75 and 383,066.65 is: 528,268.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,424.12 : 765,958.75 = 383,066.65 : x
  2. Step 2: Convert to fraction form
    555,424.12/765,958.75 = 383,066.65/x
  3. Step 3: Cross multiply
    555,424.12x = 765,958.75 × 383,066.65
  4. Step 4: Simplify right side
    555,424.12x = 293,413,252,400.69
  5. Step 5: Solve for x
    x = 293,413,252,400.69/555,424.12
  6. Step 6: Final answer
    x = 528,268.83

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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.