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Finding the Fourth Proportional to 713,580.50, 984,770.97 and 391,303.01

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Solution

The fourth proportional to 713,580.50, 984,770.97 and 391,303.01 is: 540,014.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,580.50 : 984,770.97 = 391,303.01 : x
  2. Step 2: Convert to fraction form
    713,580.50/984,770.97 = 391,303.01/x
  3. Step 3: Cross multiply
    713,580.50x = 984,770.97 × 391,303.01
  4. Step 4: Simplify right side
    713,580.50x = 385,343,844,721.62
  5. Step 5: Solve for x
    x = 385,343,844,721.62/713,580.50
  6. Step 6: Final answer
    x = 540,014.54

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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.