Home / 809,312.88-1,116,777.86-518,408.88

Finding the Fourth Proportional to 809,312.88, 1,116,777.86 and 518,408.88

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Solution

The fourth proportional to 809,312.88, 1,116,777.86 and 518,408.88 is: 715,356.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,312.88 : 1,116,777.86 = 518,408.88 : x
  2. Step 2: Convert to fraction form
    809,312.88/1,116,777.86 = 518,408.88/x
  3. Step 3: Cross multiply
    809,312.88x = 1,116,777.86 × 518,408.88
  4. Step 4: Simplify right side
    809,312.88x = 578,947,559,611.40
  5. Step 5: Solve for x
    x = 578,947,559,611.40/809,312.88
  6. Step 6: Final answer
    x = 715,356.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.