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Finding the Fourth Proportional to 528,007.20, 791,089.20 and 454,279.20

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Solution

The fourth proportional to 528,007.20, 791,089.20 and 454,279.20 is: 680,625.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,007.20 : 791,089.20 = 454,279.20 : x
  2. Step 2: Convert to fraction form
    528,007.20/791,089.20 = 454,279.20/x
  3. Step 3: Cross multiply
    528,007.20x = 791,089.20 × 454,279.20
  4. Step 4: Simplify right side
    528,007.20x = 359,375,368,904.64
  5. Step 5: Solve for x
    x = 359,375,368,904.64/528,007.20
  6. Step 6: Final answer
    x = 680,625.89

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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.