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Finding the Fourth Proportional to 608,219.54, 911,764.80 and 288,521.38

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Solution

The fourth proportional to 608,219.54, 911,764.80 and 288,521.38 is: 432,514.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,219.54 : 911,764.80 = 288,521.38 : x
  2. Step 2: Convert to fraction form
    608,219.54/911,764.80 = 288,521.38/x
  3. Step 3: Cross multiply
    608,219.54x = 911,764.80 × 288,521.38
  4. Step 4: Simplify right side
    608,219.54x = 263,063,638,331.42
  5. Step 5: Solve for x
    x = 263,063,638,331.42/608,219.54
  6. Step 6: Final answer
    x = 432,514.28

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1.5x scale

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.