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Finding the Fourth Proportional to 442,779.20, 610,850.40 and 289,854.80

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Solution

The fourth proportional to 442,779.20, 610,850.40 and 289,854.80 is: 399,878.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,779.20 : 610,850.40 = 289,854.80 : x
  2. Step 2: Convert to fraction form
    442,779.20/610,850.40 = 289,854.80/x
  3. Step 3: Cross multiply
    442,779.20x = 610,850.40 × 289,854.80
  4. Step 4: Simplify right side
    442,779.20x = 177,057,920,521.92
  5. Step 5: Solve for x
    x = 177,057,920,521.92/442,779.20
  6. Step 6: Final answer
    x = 399,878.59

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1.5x scale

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.