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Finding the Fourth Proportional to 530,578.08, 732,211.92 and 288,870.84

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Solution

The fourth proportional to 530,578.08, 732,211.92 and 288,870.84 is: 398,649.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,578.08 : 732,211.92 = 288,870.84 : x
  2. Step 2: Convert to fraction form
    530,578.08/732,211.92 = 288,870.84/x
  3. Step 3: Cross multiply
    530,578.08x = 732,211.92 × 288,870.84
  4. Step 4: Simplify right side
    530,578.08x = 211,514,672,388.41
  5. Step 5: Solve for x
    x = 211,514,672,388.41/530,578.08
  6. Step 6: Final answer
    x = 398,649.47

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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.