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Finding the Fourth Proportional to 770,751.76, 1,156,550.77 and 391,705.19

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Solution

The fourth proportional to 770,751.76, 1,156,550.77 and 391,705.19 is: 587,772.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,751.76 : 1,156,550.77 = 391,705.19 : x
  2. Step 2: Convert to fraction form
    770,751.76/1,156,550.77 = 391,705.19/x
  3. Step 3: Cross multiply
    770,751.76x = 1,156,550.77 × 391,705.19
  4. Step 4: Simplify right side
    770,751.76x = 453,026,939,107.50
  5. Step 5: Solve for x
    x = 453,026,939,107.50/770,751.76
  6. Step 6: Final answer
    x = 587,772.82

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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.