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Finding the Fourth Proportional to 709,457.06, 978,964.62 and 403,572.26

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Solution

The fourth proportional to 709,457.06, 978,964.62 and 403,572.26 is: 556,880.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,457.06 : 978,964.62 = 403,572.26 : x
  2. Step 2: Convert to fraction form
    709,457.06/978,964.62 = 403,572.26/x
  3. Step 3: Cross multiply
    709,457.06x = 978,964.62 × 403,572.26
  4. Step 4: Simplify right side
    709,457.06x = 395,082,964,153.44
  5. Step 5: Solve for x
    x = 395,082,964,153.44/709,457.06
  6. Step 6: Final answer
    x = 556,880.73

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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.