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Finding the Fourth Proportional to 716,709.36, 988,647.48 and 447,970.80

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Solution

The fourth proportional to 716,709.36, 988,647.48 and 447,970.80 is: 617,942.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,709.36 : 988,647.48 = 447,970.80 : x
  2. Step 2: Convert to fraction form
    716,709.36/988,647.48 = 447,970.80/x
  3. Step 3: Cross multiply
    716,709.36x = 988,647.48 × 447,970.80
  4. Step 4: Simplify right side
    716,709.36x = 442,885,202,533.58
  5. Step 5: Solve for x
    x = 442,885,202,533.58/716,709.36
  6. Step 6: Final answer
    x = 617,942.54

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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.