Home / 1,210,887.80-1,815,035.70-411,428.60

Finding the Fourth Proportional to 1,210,887.80, 1,815,035.70 and 411,428.60

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Solution

The fourth proportional to 1,210,887.80, 1,815,035.70 and 411,428.60 is: 616,702.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,887.80 : 1,815,035.70 = 411,428.60 : x
  2. Step 2: Convert to fraction form
    1,210,887.80/1,815,035.70 = 411,428.60/x
  3. Step 3: Cross multiply
    1,210,887.80x = 1,815,035.70 × 411,428.60
  4. Step 4: Simplify right side
    1,210,887.80x = 746,757,597,001.02
  5. Step 5: Solve for x
    x = 746,757,597,001.02/1,210,887.80
  6. Step 6: Final answer
    x = 616,702.55

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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.