Home / 811,916.80-1,215,542.40-496,988.80

Finding the Fourth Proportional to 811,916.80, 1,215,542.40 and 496,988.80

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Solution

The fourth proportional to 811,916.80, 1,215,542.40 and 496,988.80 is: 744,055.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,916.80 : 1,215,542.40 = 496,988.80 : x
  2. Step 2: Convert to fraction form
    811,916.80/1,215,542.40 = 496,988.80/x
  3. Step 3: Cross multiply
    811,916.80x = 1,215,542.40 × 496,988.80
  4. Step 4: Simplify right side
    811,916.80x = 604,110,958,725.12
  5. Step 5: Solve for x
    x = 604,110,958,725.12/811,916.80
  6. Step 6: Final answer
    x = 744,055.25

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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.