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Finding the Fourth Proportional to 886,612.80, 1,329,530.40 and 353,956.80

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Solution

The fourth proportional to 886,612.80, 1,329,530.40 and 353,956.80 is: 530,779.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,612.80 : 1,329,530.40 = 353,956.80 : x
  2. Step 2: Convert to fraction form
    886,612.80/1,329,530.40 = 353,956.80/x
  3. Step 3: Cross multiply
    886,612.80x = 1,329,530.40 × 353,956.80
  4. Step 4: Simplify right side
    886,612.80x = 470,596,325,886.72
  5. Step 5: Solve for x
    x = 470,596,325,886.72/886,612.80
  6. Step 6: Final answer
    x = 530,779.98

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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.