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Finding the Fourth Proportional to 476,561.96, 657,099.90 and 355,493.06

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Solution

The fourth proportional to 476,561.96, 657,099.90 and 355,493.06 is: 490,165.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,561.96 : 657,099.90 = 355,493.06 : x
  2. Step 2: Convert to fraction form
    476,561.96/657,099.90 = 355,493.06/x
  3. Step 3: Cross multiply
    476,561.96x = 657,099.90 × 355,493.06
  4. Step 4: Simplify right side
    476,561.96x = 233,594,454,176.69
  5. Step 5: Solve for x
    x = 233,594,454,176.69/476,561.96
  6. Step 6: Final answer
    x = 490,165.97

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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.