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Finding the Fourth Proportional to 528,007.88, 790,864.84 and 324,985.16

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Solution

The fourth proportional to 528,007.88, 790,864.84 and 324,985.16 is: 486,771.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,007.88 : 790,864.84 = 324,985.16 : x
  2. Step 2: Convert to fraction form
    528,007.88/790,864.84 = 324,985.16/x
  3. Step 3: Cross multiply
    528,007.88x = 790,864.84 × 324,985.16
  4. Step 4: Simplify right side
    528,007.88x = 257,019,336,565.77
  5. Step 5: Solve for x
    x = 257,019,336,565.77/528,007.88
  6. Step 6: Final answer
    x = 486,771.78

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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.