Home / 674,926.85-931,633.61-388,561.07

Finding the Fourth Proportional to 674,926.85, 931,633.61 and 388,561.07

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Solution

The fourth proportional to 674,926.85, 931,633.61 and 388,561.07 is: 536,349.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,926.85 : 931,633.61 = 388,561.07 : x
  2. Step 2: Convert to fraction form
    674,926.85/931,633.61 = 388,561.07/x
  3. Step 3: Cross multiply
    674,926.85x = 931,633.61 × 388,561.07
  4. Step 4: Simplify right side
    674,926.85x = 361,996,545,748.59
  5. Step 5: Solve for x
    x = 361,996,545,748.59/674,926.85
  6. Step 6: Final answer
    x = 536,349.31

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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.