Home / 709,487.07-979,115.04-403,555.56

Finding the Fourth Proportional to 709,487.07, 979,115.04 and 403,555.56

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Solution

The fourth proportional to 709,487.07, 979,115.04 and 403,555.56 is: 556,919.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,487.07 : 979,115.04 = 403,555.56 : x
  2. Step 2: Convert to fraction form
    709,487.07/979,115.04 = 403,555.56/x
  3. Step 3: Cross multiply
    709,487.07x = 979,115.04 × 403,555.56
  4. Step 4: Simplify right side
    709,487.07x = 395,127,318,271.62
  5. Step 5: Solve for x
    x = 395,127,318,271.62/709,487.07
  6. Step 6: Final answer
    x = 556,919.69

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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.