Home / 876,142.20-1,312,658.10-543,329.40

Finding the Fourth Proportional to 876,142.20, 1,312,658.10 and 543,329.40

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Solution

The fourth proportional to 876,142.20, 1,312,658.10 and 543,329.40 is: 814,029.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,142.20 : 1,312,658.10 = 543,329.40 : x
  2. Step 2: Convert to fraction form
    876,142.20/1,312,658.10 = 543,329.40/x
  3. Step 3: Cross multiply
    876,142.20x = 1,312,658.10 × 543,329.40
  4. Step 4: Simplify right side
    876,142.20x = 713,205,737,878.14
  5. Step 5: Solve for x
    x = 713,205,737,878.14/876,142.20
  6. Step 6: Final answer
    x = 814,029.66

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1.5x scale

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.