Home / 639,313.45-958,935.11-386,526.08

Finding the Fourth Proportional to 639,313.45, 958,935.11 and 386,526.08

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Solution

The fourth proportional to 639,313.45, 958,935.11 and 386,526.08 is: 579,767.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,313.45 : 958,935.11 = 386,526.08 : x
  2. Step 2: Convert to fraction form
    639,313.45/958,935.11 = 386,526.08/x
  3. Step 3: Cross multiply
    639,313.45x = 958,935.11 × 386,526.08
  4. Step 4: Simplify right side
    639,313.45x = 370,653,429,507.38
  5. Step 5: Solve for x
    x = 370,653,429,507.38/639,313.45
  6. Step 6: Final answer
    x = 579,767.92

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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.