Home / 709,499.08-979,131.60-403,567.56

Finding the Fourth Proportional to 709,499.08, 979,131.60 and 403,567.56

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Solution

The fourth proportional to 709,499.08, 979,131.60 and 403,567.56 is: 556,936.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,499.08 : 979,131.60 = 403,567.56 : x
  2. Step 2: Convert to fraction form
    709,499.08/979,131.60 = 403,567.56/x
  3. Step 3: Cross multiply
    709,499.08x = 979,131.60 × 403,567.56
  4. Step 4: Simplify right side
    709,499.08x = 395,145,750,730.90
  5. Step 5: Solve for x
    x = 395,145,750,730.90/709,499.08
  6. Step 6: Final answer
    x = 556,936.24

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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.