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Finding the Fourth Proportional to 709,774.68, 979,430.22 and 403,769.64

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Solution

The fourth proportional to 709,774.68, 979,430.22 and 403,769.64 is: 557,168.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,774.68 : 979,430.22 = 403,769.64 : x
  2. Step 2: Convert to fraction form
    709,774.68/979,430.22 = 403,769.64/x
  3. Step 3: Cross multiply
    709,774.68x = 979,430.22 × 403,769.64
  4. Step 4: Simplify right side
    709,774.68x = 395,464,187,334.52
  5. Step 5: Solve for x
    x = 395,464,187,334.52/709,774.68
  6. Step 6: Final answer
    x = 557,168.63

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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.