Home / 789,534.98-1,089,680.91-518,389.46

Finding the Fourth Proportional to 789,534.98, 1,089,680.91 and 518,389.46

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Solution

The fourth proportional to 789,534.98, 1,089,680.91 and 518,389.46 is: 715,457.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,534.98 : 1,089,680.91 = 518,389.46 : x
  2. Step 2: Convert to fraction form
    789,534.98/1,089,680.91 = 518,389.46/x
  3. Step 3: Cross multiply
    789,534.98x = 1,089,680.91 × 518,389.46
  4. Step 4: Simplify right side
    789,534.98x = 564,879,098,507.21
  5. Step 5: Solve for x
    x = 564,879,098,507.21/789,534.98
  6. Step 6: Final answer
    x = 715,457.98

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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.