Home / 638,669.30-956,919.49-385,417.64

Finding the Fourth Proportional to 638,669.30, 956,919.49 and 385,417.64

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Solution

The fourth proportional to 638,669.30, 956,919.49 and 385,417.64 is: 577,472.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,669.30 : 956,919.49 = 385,417.64 : x
  2. Step 2: Convert to fraction form
    638,669.30/956,919.49 = 385,417.64/x
  3. Step 3: Cross multiply
    638,669.30x = 956,919.49 × 385,417.64
  4. Step 4: Simplify right side
    638,669.30x = 368,813,654,041.92
  5. Step 5: Solve for x
    x = 368,813,654,041.92/638,669.30
  6. Step 6: Final answer
    x = 577,472.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.