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Finding the Fourth Proportional to 695,868.91, 960,322.53 and 663,982.45

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Solution

The fourth proportional to 695,868.91, 960,322.53 and 663,982.45 is: 916,318.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,868.91 : 960,322.53 = 663,982.45 : x
  2. Step 2: Convert to fraction form
    695,868.91/960,322.53 = 663,982.45/x
  3. Step 3: Cross multiply
    695,868.91x = 960,322.53 × 663,982.45
  4. Step 4: Simplify right side
    695,868.91x = 637,637,306,348.73
  5. Step 5: Solve for x
    x = 637,637,306,348.73/695,868.91
  6. Step 6: Final answer
    x = 916,318.14

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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.