Home / 811,893.72-1,120,423.50-449,316.66

Finding the Fourth Proportional to 811,893.72, 1,120,423.50 and 449,316.66

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Solution

The fourth proportional to 811,893.72, 1,120,423.50 and 449,316.66 is: 620,062.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,893.72 : 1,120,423.50 = 449,316.66 : x
  2. Step 2: Convert to fraction form
    811,893.72/1,120,423.50 = 449,316.66/x
  3. Step 3: Cross multiply
    811,893.72x = 1,120,423.50 × 449,316.66
  4. Step 4: Simplify right side
    811,893.72x = 503,424,944,805.51
  5. Step 5: Solve for x
    x = 503,424,944,805.51/811,893.72
  6. Step 6: Final answer
    x = 620,062.62

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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.