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Finding the Fourth Proportional to 716,749.56, 988,703.01 and 448,011

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Solution

The fourth proportional to 716,749.56, 988,703.01 and 448,011 is: 617,998.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,749.56 : 988,703.01 = 448,011 : x
  2. Step 2: Convert to fraction form
    716,749.56/988,703.01 = 448,011/x
  3. Step 3: Cross multiply
    716,749.56x = 988,703.01 × 448,011
  4. Step 4: Simplify right side
    716,749.56x = 442,949,824,213.11
  5. Step 5: Solve for x
    x = 442,949,824,213.11/716,749.56
  6. Step 6: Final answer
    x = 617,998.04

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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.