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Finding the Fourth Proportional to 487,003.69, 671,868.58 and 323,739.14

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Solution

The fourth proportional to 487,003.69, 671,868.58 and 323,739.14 is: 446,629.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,003.69 : 671,868.58 = 323,739.14 : x
  2. Step 2: Convert to fraction form
    487,003.69/671,868.58 = 323,739.14/x
  3. Step 3: Cross multiply
    487,003.69x = 671,868.58 × 323,739.14
  4. Step 4: Simplify right side
    487,003.69x = 217,510,156,282.22
  5. Step 5: Solve for x
    x = 217,510,156,282.22/487,003.69
  6. Step 6: Final answer
    x = 446,629.38

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1.5x scale

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.