Home / 709,485.68-979,065.53-403,538.96

Finding the Fourth Proportional to 709,485.68, 979,065.53 and 403,538.96

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Solution

The fourth proportional to 709,485.68, 979,065.53 and 403,538.96 is: 556,869.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,485.68 : 979,065.53 = 403,538.96 : x
  2. Step 2: Convert to fraction form
    709,485.68/979,065.53 = 403,538.96/x
  3. Step 3: Cross multiply
    709,485.68x = 979,065.53 × 403,538.96
  4. Step 4: Simplify right side
    709,485.68x = 395,091,087,691.29
  5. Step 5: Solve for x
    x = 395,091,087,691.29/709,485.68
  6. Step 6: Final answer
    x = 556,869.71

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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.