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Finding the Fourth Proportional to 578,574.72, 868,423.32 and 279,266.16

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Solution

The fourth proportional to 578,574.72, 868,423.32 and 279,266.16 is: 419,170.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,574.72 : 868,423.32 = 279,266.16 : x
  2. Step 2: Convert to fraction form
    578,574.72/868,423.32 = 279,266.16/x
  3. Step 3: Cross multiply
    578,574.72x = 868,423.32 × 279,266.16
  4. Step 4: Simplify right side
    578,574.72x = 242,521,245,830.85
  5. Step 5: Solve for x
    x = 242,521,245,830.85/578,574.72
  6. Step 6: Final answer
    x = 419,170.14

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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.