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Finding the Fourth Proportional to 664,421.94, 916,889.49 and 362,618.10

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Solution

The fourth proportional to 664,421.94, 916,889.49 and 362,618.10 is: 500,406.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,421.94 : 916,889.49 = 362,618.10 : x
  2. Step 2: Convert to fraction form
    664,421.94/916,889.49 = 362,618.10/x
  3. Step 3: Cross multiply
    664,421.94x = 916,889.49 × 362,618.10
  4. Step 4: Simplify right side
    664,421.94x = 332,480,724,773.77
  5. Step 5: Solve for x
    x = 332,480,724,773.77/664,421.94
  6. Step 6: Final answer
    x = 500,406.00

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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.