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Finding the Fourth Proportional to 713,457.35, 984,559.92 and 391,170.23

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Solution

The fourth proportional to 713,457.35, 984,559.92 and 391,170.23 is: 539,808.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,457.35 : 984,559.92 = 391,170.23 : x
  2. Step 2: Convert to fraction form
    713,457.35/984,559.92 = 391,170.23/x
  3. Step 3: Cross multiply
    713,457.35x = 984,559.92 × 391,170.23
  4. Step 4: Simplify right side
    713,457.35x = 385,130,530,355.18
  5. Step 5: Solve for x
    x = 385,130,530,355.18/713,457.35
  6. Step 6: Final answer
    x = 539,808.76

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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.