Home / 811,300.75-1,216,692.32-278,693.35

Finding the Fourth Proportional to 811,300.75, 1,216,692.32 and 278,693.35

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Solution

The fourth proportional to 811,300.75, 1,216,692.32 and 278,693.35 is: 417,951.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,300.75 : 1,216,692.32 = 278,693.35 : x
  2. Step 2: Convert to fraction form
    811,300.75/1,216,692.32 = 278,693.35/x
  3. Step 3: Cross multiply
    811,300.75x = 1,216,692.32 × 278,693.35
  4. Step 4: Simplify right side
    811,300.75x = 339,084,057,186.61
  5. Step 5: Solve for x
    x = 339,084,057,186.61/811,300.75
  6. Step 6: Final answer
    x = 417,951.12

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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.